Full text of "Apple PowerMac Manual: powermac g4"

See other formats

# Service Source

Power Mac G4/
Macintosh Server G4

Power Mac G4 (AGP Graphics/Gigabit Ethernet/Digital Audio/
QuickSilver/QuickSilver 2002), Power Mac G4 (PCI Graphics),
Macintosh Server G4 with Mac OS X Server,

Macintosh Server G4

^ Service Source

Basics

Power Mac G4/
Macintosh Server G4

Product Description - 1

Overview

Product Description

The Power Mac G4 is the
first Power Mac computer
based on the PowerPC G4
processor. Some
configurations also include
support for wireless
networking, dual-channel
USB, Gigabit Ethernet, dual
processing, digital audio,
and a wake/sleep power
management feature.

Basics

Identifying Versions of the Power Mac G4 - 2

Power Mac G4 (QulcK Silver) drier Power Mac G4 Model £

Identifying Versions of
the Power Mac G4

There are six models of
Power Mac G4 computers:
AGP Graphics, PCI Graphics,
Gigabit Ethernet, Digital
Audio, Quicksilver, and
Quicksilver 2002.

Power Mac G4 (Quicksilver
and Quicksilver 2002)
computers are easy to
identify. Unlike other Power
Mac G4 models, these models
have a silver-colored case.
They also have a recessed
speaker on the front panel.

Basics

New Technologies - 3

To identify the other Power
Mac G4 models, check the

Rjw^r Mac G4 (PCI Graphics) Power Mac G4 (Digital Audio) 1/0 Panel at tne back of tne

computer. The sound ports
align horizontally in the
lower half of the I/O panel
on PCI Graphics models and
vertically on AGP Graphics/
Gigabit Ethernet models. On
Digital Audio models, the
sound ports are in the upper
half of the I/O panel. In
addition, Digital Audio
models include four
expansion slots, instead of
three slots on PCI/AGP
Graphics/Gigabit Ethernet
models.

To further distinguish
Gigabit Ethernet models

from AGP Graphics models,
check the logic boards. AGP
Graphics boards include an

internal FireWire connector
at J9; Gigabit Ethernet
boards do not include the
connector.

New Technologies

While the Power Mac G4
family of computers all use
the innovative PowerPC G4
processor, they also include
a range of other new hard-
ware and architectures. For
information on the latest
technolgies, check the Apple
Knowledge Base.

Basics

Standard Configurations - 4

Features

Standard Configurations

Processor

• 350 MHz, 400 MHz, 450 MHz, 466 MHz, 500 MHz, 533
MHz, 733 MHz, 800 MHz, 867 MHz, 933 MHz, or 1 GHz
PowerPC G4 processor; dual processors on some
configurations

• Velocity Engine vector processing unit with 162
integrated Single Instruction Multiple Data (SIMD)
instructions

• Full 128-bit internal memory data paths

• Powerful floating-point unit supporting single-cycle,
double-precision calculations

• Data stream prefetching operations supporting four

Basics

Standard Configurations - 5

simultaneous 32-bit data streams

• L2 or L3 cache

• 100-MHz system bus (PCI Graphics/AGP Graphics/
Gigabit Ethernet) or 133-MHz system bus
(QuickSilvers/Digital Audio)

Memory

• 64, 128, 256, or 512 MB of PC-100 SDRAM (PCI
Graphics/AGP Graphics/Gigabit Ethernet) or

64, 128, 256, or 512 MB of PC-133 SDRAM
(QuickSilvers/Digital Audio)

• Four DIMM slots (PCI Graphics/AGP Graphics/Gigabit
Ethernet) or three DIMM slots (QuickSilvers/Digital
Audio)

Basics

Standard Configurations - 6

Storage

• One of the following hard drives: 10, 13, 20, 27, 30,
40, 60, or 80 GB Ultra ATA

• One of the following optical drives:

- CD-ROM drive

- CD-RW drive

- DVD-ROM drive

- DVD-RAM drive

- DVD-R/CD-RW drive

- DVD/CD-RW drive

• Optional 100 or 250 MB Zip drive

• Three 3.5-inch hard drive expansion bays

- One ATA drive preinstalled in standard configurations

- Support for up to two internal ATA drives

- Support for up to three internal SCSI drives

Basics

Standard Configurations - 7

Graphics Support

• Video card installed in a dedicated graphics slot (either a
PCI slot or an AGP slot)

• Support for up to 1 ,600 by 1 ,200 pixel resolution at 32
bits per pixel and up to 85-Hz refresh rate

• 15-pin mini D-Sub VGA connector

• ADC connector for digital flat-panel display (not
available on PCI Graphics computers)

• Support for independent video output to two monitors
(with NVIDIA TwinView video card)

Basics

Standard Configurations - 8

Electrical Requirements and Agency Approvals

• Line voltage: 1 1 5V AC (90V to 1 32V AC) or 230V AC
(180V to 264V AC)

• Frequency: 47 to 63 Hz, single phase

• Maximum continuous power (not including display):
200W EPA ENERGY STAR and Blue Angel compliant (some
configurations)

Environmental Requirements

• Operating temperature: 50°to 95° F (10°to 35°C)

• Storage temperature: -40° to 116°F (-40° to 47° C)

• Relative humidity: 5% to 95% noncondensing

• Maximum altitude: 10,000 feet (3,048 m)

Basics

Standard Configurations - 9

Size and Weight

• Height: 17.0 inches (43.2 cm)

• Width: 8.9 inches (22.6 cm)

• Depth: 18.4 inches (46.7 cm)

• Weight: 30.0 pounds (13.6 kg)

Note: Storage devices and interfaces vary among
configurations.

Basics

Configure-to-Order Options - 10

Configure-to-Order Options

The configure-to-order options are available from the
Apple Store. For more information, view the options online
at http://store.apple.com.

Basics

Power Mac G4 (AGP Graphics/Gigabit Ethernet) Views - 1 1

Views

Power Mac G4 (AGP Graphics/Gigabit Ethernet) Views

FireWire Ports (2)
Ethernet Port

USB Ports (2)

Sound Input Port-
Sound Output Port

Internal
Modem Port
(Optional)

VGA Monitor Port
(Slot 1: AGP)

Access Covers for •
Expansion Slots

Power Mac G4 (Digital Audio) Views

-^ft Basics

Power Mac G4 (AGP Graphics/Gigabit Ethernet) Internal Locator - 1 2

Power Mac G4 (AGP Graphics/Gigabit Ethernet) Internal Locator

Drive Bay 1

Drive Bay 2

Drive Bay 3

Power Mac G4 (QuickSilvers/Digital Audio) Internal Locator

Drive Bay 3
Drive Bay 2
Drive Bay 1

-^ft Basics

PowerMac G4 (AGP Graphics/Gigabit Ethernet) Logic Boards - 1 3

PowerMac G4 (AGP Graphics/Gigabit Ethernet) Logic Boards

£ O

USB

Monitor
PCI Slots Card Slot

PMU Button-

Battery -

Ultra ATA
Connector

Power -

Modem
Connector

Front Panel
Board

~o -a

§ § Ports Ethernet FireWire
° ° A & B Connector Ports (2)

Speaker — p

Internal

FireWire

Port

(not included
on Gigabit
models)

rPort IDE Processor
Connector Connector Plug-In

Slot

SDRAM
DIMM Slots

-^ft Basics

PowerMac G4 (QuickSilvers/Digital Audio) Logic Board - 14

PowerMac G4 (QuickSilvers/Digital Audio) Logic Board

USB
Ports
A & B

Monitor SDRAM
PCI Card DIMM
Slots slot

Ultra ATA -
Connector

Power-

Modem
Connector

Front Panel _f|
Board ill

Speaker -^-fl

Ethernet
Connector

FireWire
Ports (2)

Digital Audio Jack
Headphone Jack

-Single or Dual
Processor

PMU Button
Battery

AirPort
Connector

IDE

Connector

-^ft Basics

Power Mac G4 (PCI Graphics) Logic Board - 1 5

Power Mac G4 (PCI Graphics) Logic Board

Monitor Card Slot

PCI Slots

J1 ATA-3
(CD/DVD-ROM
and Zip Drive

J1 5 Ultra DMA/33— |-
(ATA Drives)

J23 Power -|

S5 Power Button
S4 Cuda Button

Battery/

Sound In & -,
Sound Out
Ports

USB
Ports

i — Ethernet Connector

Firewire Ports (2)
Firewire Card

Modem
Connector

SDRAM
DIMM Slots

J8 CD Audio ^ J31 Processor J34 \J25 ^-J2 Firewire

Front Panel Plug-In Speaker Jumper Block Power
Board Slot (w/sticker)

Basics

Strategy and Ordering - 1 6

Repair Strategy /Warranty

Strategy and Ordering

Service Power Mac G4 computers through module exchange
and parts replacement.

Apple-authorized service providers planning to support the
computer systems covered in this manual may purchase
service modules and parts to develop servicing capability. To
order parts, use the AppleOrder (U.S. only) or ARIS (Canada
only) system and refer to the Power Mac G4 Service Price
Pages.

Large businesses, universities, and K-12 accounts must
provide a purchase order on all transactions, including
orders placed through the AppleOrder (U.S. only) or ARIS
(Canada only) system.

Basics

Strategy and Ordering - 1 7

USA Ordering

U.S. service providers not enrolled in AppleOrder may fax
their orders to Service Provider Support (512-908-
81 25) or mail them to:

Apple Computer, Inc.

Service Provider Support / MS 212-SPS

2323 Ridgepoint Drive

Austin, TX 78754

For U.S. inquiries, please call Service Provider Support
(800-919-2775, option #1).

Basics

Warranty - 1 8

Canadian Ordering

Canadian service providers not enrolled in ARIS may fax
their orders to Service Provider Support in Canada (800-
903-5284). For Canadian inquiries, please call Service
Provider Support (800-217-9517).

Warranty
U.S. Only

Power Mac G4 computers are covered under the Apple One-
Year Limited Warranty. The AppleCare Protection Plan is
also available for these products. Service providers are
reimbursed for warranty and AppleCare Protection Plan
repairs. For pricing information, refer to Service Price
Pages.

Basics

Warranty - 1 9

Canada Only

Power Mac G4 computers are covered under the Apple One-
Year Limited Warranty. The AppleCare Protecion Plan is
also available for these products. Service providers are
reimbursed for warranty and AppleCare Protection Plan
repairs. For pricing information, refer to Service Price
Pages.

# Service Source

Take Apart

Power Mac G4 / Macintosh

Server G4

j-fflj Take Apart

Identifying Models of the Power Mac G4 - 1

Power Mac G4 (QUICkSlhrar)

General

Identifying Models of
the Power Mac G4

There are six models of
Power Mac G4 computers:
AGP Graphics, PCI Graphics,
Gigabit Ethernet, Digital
Audio, Quicksilver, and
Quicksilver 2002.

Power Mac G4 (Quicksilver
and Quicksilver 2002)
computers are easy to
identify. Unlike other Power
Mac G4 models, these models

-^fl Take Apart

Identifying Models of the Power Mac G4 - 2

Power Mac G4 (PCI Graphics) Power Mac G4 (Digital Audio) have 3 silver-colored case.

They also have a recessed
speaker on the front panel.

To identify the other Power
Mac G4 models, check the 1/
0 panel at the back of the
computer. The sound ports
align horizontally in the
lower half of the I/O panel
on PCI Graphics models and
vertically on AGP Graphics/
Gigabit Ethernet models. On
Digital Audio models, the
sound ports are in the upper
half of the I/O panel. In
addition, Digital Audio
models include four

-^fl Take Apart

Identifying Models of the Power Mac G4 - 3

PowerMac G4 (AGP Graph cs)
1 •■ —

Sound Ports
(Aligned Vertically)

expansion slots, instead of
three slots on PCI/AGP
Graphics/Gigabit Ethernet
models.

To further distinguish
Gigabit Ethernet models
from AGP Graphics models,
check the logic boards. AGP
Graphics boards include an
internal FireWire connector
at J9; Gigabit Ethernet
boards do not.

Note: Except where indi-
cated, the following proce-
dures apply to all six
models.

Take Apart

Tools - 4

Tools

• Flatblade screwdriver

• Phillips screwdriver

• Allen wrench (2.5 mm)
to remove the power
supply, side panels, top
and rear handles, and
front and rear supports

• Jeweler's screwdriver to
remove the I/O panel
cover and antenna

• Needlenose pliers to
remove the right and left
side panels

• ESD mat

Take Apart

Opening the Computer - 5

Procedures

Opening the Computer

No preliminary steps are
required before you begin
this procedure.

Opening the Computer - 6

1 . Lift the latch to unlock
the right side access
panel.

Note: Make sure the
security bar is in the
unlock position.

2. Gently lower the side
panel onto a clean, ESD-
safe mat to avoid
scratching the case.
Lower the side panel
until it lies flat.

jffij Take Apart

Video Card - 7

Video Card

Before you begin, do the
following:

• Open the side access
panel.

• Remove the external video
cable.

Note: The AGP video card is
always installed in slot 1
(short slot). The DVD
decoder module is used only
in Power Mac G4 (PCI
Graphics) computers.

Video Card - 8

1 . Remove the video card
mounting screw.

2. If a plastic clip sur-
rounds the video card
connector, gently pull
back the clip's tab to
release the card. Then
gently pull the card up, and
remove it from the AGP
slot.

3. Power Mac G4 (PCI
Graphics): If you are
replacing the DVD
decoder module, pull it
straight off the card.

Video Card - 9

Replacement Note: If the

replacement card does not
have a fence already installed,
attach the fence enclosed in
the box. Using a Phillips
screwdriver, install the two
small Phillips screws on either
side of the ADC connector and
the two large Phillips screws on
the fence side tabs. Using
pliers, install the two jack-nut
screws on either side of the
VGA connector.

Take Apart Modem, AGP Graphics/Gigabit Ethernet/Digital Audio/QuickSilvers - 1 0

i— Modem Filter

Modem, AGP
Graphics/Gigabit
Ethernet/Digital Audio/
Quicksilvers

Note: The Power Mac G4
(AGP Graphics/Gigabit
Ethernet/Digital Audio/
QuickSilver/QuickSilver
2002) modem requires a
modem filter; the two are
separate parts. To remove
the modem, you do not need
to remove the modem filter.

Before you begin, open the
side access panel.

~^fl Take Apart Modem, AGP Graphics/Gigabit Ethernet/Digital Audio/QuickSilvers - 1 1

Warning: Use care when
disconnecting or connecting
the modem to the J27
connector on the logic board.
Bent pins in the J27
connector could cause a
short in the logic board.

1 . Remove the two modem
mounting screws.

2. Lift the modem straight
up to disconnect it from
the logic board.

Take Apart Modem, AGP Graphics/Gigabit Ethernet/Digital Audio/QuickSilvers - 1 2

3. Disconnect the modem
filter cable from the
modem.

4. Remove the modem from
the computer.

Replacement Note: After
replacing an international
modem, use the Modem
Country Selector utility to
set the modem to the correct
country.

Take Apart Modem Filter, AGP Graphics/Gigabit Ethernet/Digital Audio/QuickSilvers

Modem Fitter

Modem Filter, AGP
Graphics/Gigabit
Ethernet/Digital Audio/
Quicksilvers

Before you begin, do the
following:

• Open the side access
panel.

• Remove the logic board.

~Q?t Take Apart Modem Filter, AGP Graphics/Gigabit Ethernet/Digital Audio/QuickSilvers

2. Free the modem filter
cable from the chassis
guides and remove the
modem filter from the
computer.

Modem, PCI Graphics - 1 6

Modem, PCI Graphics

Before you begin, open the
side access panel.

Warning: Use care when
disconnecting or connecting
the modem to the J27
connector on the logic board.
Bent pins in the J27
connector could cause a
short in the logic board.

Modem, PCI Graphics - 1 7

1 . Remove the screw
(located next to the
modem port) that
secures the modem to the
I/O panel.

2. Remove the screw that
secures the modem leg
standoff to the logic
board.

-^fl Take Apart

Modem, PCI Graphics - 1 8

3. Carefully disconnect the
flexible modem cable
from the logic board.
Important: The modem
cable is very fragile.

4. Gently lift up the modem
to remove it from the
logic board.

Note: If you are

replacing the modem,
continue with the Take
Apart procedures to
remove the modem from
the bottom modem shield.

-^fl Take Apart

Modem Cable

Modem, PCI Graphics - 1 9

5. With a jeweler's
screwdriver, pry up the
metal tabs on the top
shield.

6. Carefully disconnect the
flexible modem cable
from the modem board.

Modem

Bottom Shield Modem Sorew

Modem, PCI Graphics -

7. Remove the screw
securing the modem to
the bottom shield.

Take Apart

Modem, PCI Graphics - 21

Modern

Bottom Shield

Tab
(On Inside)

8. Note: There are two tiny
metal tabs on the inside
of the bottom shield. The
modem rests on these
tabs so it does not make
contact with the bottom
shield.

With a needlenose
pliers, pinch the tiny
metal tabs flat so the
modem board can be
removed from the bottom
shield.

Modem, PCI Graphics - 22

9. Carefully spread the
sides of the bottom shield
out just enough so the
modem clears the tabs,
and starts to fall out of
the bottom shield.

10. Carefully remove the
modem from the bottom
shield.

Replacement Note: After
replacing an international
modem, use the Modem
Country Selector utility to
set the modem to the correct
country.

Take Apart

FireWire Board, PCI Graphics - 23

FireWire Board, PCI
Graphics

Note: The FireWire board is
used only in Power Mac G4
(PCI Graphics) computers.
Power Mac G4 (AGP
Graphics/Gigabit Ethernet/
Digital Audio/QuickSilver/
Quicksilver 2002)
computers have FireWire
built into the logic board.

Before you begin, do the
following:

• Open the side access
panel.

• Remove the modem.

Take Apart

FireWire Board, PCI Graphics - 24

Remove the screw
securing the FireWire
board to the I/O panel.

Remove the screw that
secures the FireWire
board to the metal
standoff.

Disconnect the FireWire
cable, the short 3-pin
cable from the back of
the FireWire board or
logic board.

Gently lift up the
FireWire board to
remove it from the logic
board connector.

-^fl Take Apart

Processor Fan, Power Mac G4 (Quicksilvers) - 26

1 . Disconnect the processor
fan cable from the logic
board.

2. Remove the two fan
mounting screws.

3. Lift the processor fan
out of the computer.

Take Apart

Processor Module, Power Mac G4 (Quicksilvers) - 27

% IP

Processor Module,
Power Mac G4
(Quicksilvers)

Before you begin, do the
following:

• Open the side access
panel.

• Remove the processor fan.

Awarning: The heatsink
covering the processor may
be hot. If the computer has
been recently operating,
allow it to cool down before
performing this procedure.

-^fl Take Apart

Processor Module, Power Mac G4 (Quicksilvers) - 28

For single processors:
Release the right heat-
sink clip by pressing
down on the top of the
clip with one finger
while using a small
flatblade screwdriver to
lift up and out on the
clip's front tab. Repeat
for the left heatsink clip.

Power Mac G4 (Quicksilvers) - 29

2. For dual processors:
Release the right heat-
sink clip by pressing
down on the top of the
clip with a screwdriver
while using a second
flatblade screwdriver to
lift up and out on the
clip's front tab. Repeat
for the left heatsink clip.

Awarning: Be careful
when pressing down on
the top of the clip. Too
much pressure can cause
the screwdriver to slip
and damage the logic
board.

Take Apart

Processor Module, Power Mac G4 (Quicksilvers) - 30

3. Remove both clips and
lift the heatsink off the
processor module.

Awarning: When
removing the heatsink,
be careful not to bend the
processor module
beneath it.

Take Apart

Processor Module, Power Mac G4 (Quicksilvers) - 31

Awarning: Double-check
that the computer is turned
off before performing this
procedure. The screw in the
bottom left circle of the
illustration conducts 1 2 V
and could spark if grounded
while the computer is on.

4. Remove the four
mounting screws.

-^fi Take Apart

Processor Module, Power Mac G4 (Quicksilvers) - 32

5. To disconnect the

processor from the logic
board, hold it by the long
edges, gently rock the
processor right to left,
and lift straight up.

A Warning: Hold the
module as shown when
removing or installing it
to avoid bending the
processor connector
pins.

Replacement Note: When
replacing the processor
module, tighten all screws
snugly, but not so tightly as
to damage the module. If the

-^fl Take Apart

Processor Module, Power Mac G4 (Quicksilvers) - 33

conducting screw is loose,
arcing can occur, damaging
the processor.

Important: If you are

installing a new processor,
use the screw included in the
processor box. Install the
screw in the screw hole
exposed by the heatsink, as
shown in the illustration. Be
sure to tighten the screw
snugly, but do not
overtighten.

Note: The old screw should
be discarded.

-^fl Take Apart

Processor Module, Power Mac G4 (Quicksilvers) - 34

Important: If you are

replacing the processor
module, you must also
transfer the replacement
module's connector cover to
the connector on the original
module before returning it
to Apple.

A Warning: Be sure to
reinstall the heatsink after
replacing or reinstalling the
processor module. Operating
the computer without the
heatsink in place will
destroy the processor.

-ffl Take Apart Processor Module, AGP Graphics/Gigabit Ethernet/Digital Audio - 35

Processor Module,
AGP Graphics/Gigabit
Ethernet/Digital Audio

Before you begin, open the
side access panel.

Awarning: The heatsink
covering the processor may
be hot. If the computer has
been recently operating,
allow it to cool down before
performing this procedure.

-ffl Take Apart Processor Module, AGP Graphics/Gigabit Ethernet/Digital Audio - 36

— mr 1

While pressing down on
the top of the heatsink
clip, use a small
flatblade screwdriver to
lift up and out on the
front tab of the clip to
release it.

Remove the heatsink clip
and lift the heatsink off
the processor module.

Awarning: When
removing the heatsink,
be careful not to bend the
processor module
beneath it.

-ffl Take Apart Processor Module, AGP Graphics/Gigabit Ethernet/Digital Audio - 37

3. Remove the processor
mounting screws.

4. To disconnect the
processor from the logic
board, hold it by the
edges nearest the two
opposing screw holes (on
either side of the
connector), gently rock
the processor right to
left, and lift straight up.

A Warning: Hold the
module as shown when
removing or installing it
to avoid bending the
processor connector
pins.

-ffl Take Apart Processor Module, AGP Graphics/Gigabit Ethernet/Digital Audio - 38

Important: If you are

replacing the processor
module, you must also
transfer the replacement
module's connector cover to
the connector on the original
module before returning it
to Apple. Make sure the hole
in the cover aligns with pin
one (marked by a white V)
on the connector.

j-fflj Take Apart

Processor Module, PCI Graphics - 39

Processor Module, PCI
Graphics

Before you begin, open the
side access panel.

Note: The Power Mac G4
(PCI Graphics) processor
requires a jumper installed
at J25 on the logic board.

-^fl Take Apart

Processor Module, PCI Graphics - 40

1 . Remove the screw that
attaches the heatsink
ground wire to the logic
board.

Awarning: The heatsink
may be hot to the touch. If
the computer has been
operating, allow it to cool
down before continuing.

2. While pressing down on
the top of the heatsink
clip, use a small
flatblade screwdriver to
release the clip by
lifting up and out on its
center front tab.

Heats hk

Heats hk Clp

-^fl Take Apart

Processor Module, PCI Graphics - 41

Lever Processo r Mo du le

3. Remove the heatsink clip
and lift the heatsink off
the processor module.

4. Lift the lever to release
the processor module.

-^fi Take Apart

Processor Module, PCI Graphics - 42

5. Holding the processor by
the edges, gently lift it
straight up to disconnect
it from the logic board.

Caution: Be careful not
to bend the pins under-
neath the module.

Important: If you are only
replacing the processor
module, stop here. If,
however, you are removing
the processor module to
replace the logic board,
continue with the next page.

! Take Apart

Processor Module, PCI Graphics - 43

6. Remove the warranty
sticker and jumper
block only if you are
replacing the logic
board.

White jumper: 400 MHz
Blue jumper: 350 MHz

Caution: When removing the
jumper, be sure not to leave
its inner metal clips on the
old jumper connector. If the
clips are left behind, install
a new jumper on the new
board. If you use a jumper
without clips, or improper-
ly install the jumper, the
unit could fail to start up.

-^fl Take Apart

Processor

r Module, PCI Graphics - 44

7. Install the jumper block
with the gold connector
pins facing toward the
board. Be sure the pins
are covered as shown.

-^fl Take Apart

Processor Module, PCI Graphics - 45

Gap Filler—,

r- Capacitor

Replacement Note: Position
the processor module over
the slot, seat it evenly, and
press down gently on the
module to install it. If you
are installing a new
processor, install a gap
filler on it as illustrated.

Caution: On modules with
capacitors, make sure all
capacitors show through the
opening in the gap filler.

-^fl Take Apart

Processor Module, PCI Graphics - 46

Important: If you are

Take Apart

Logic Board, Power Mac G4 (Quicksilvers) - 47

Logic Board, Power
Mac G4 (Quicksilvers)

Before you begin, open the
side access panel and remove
the following:

• video card

• processor fan

• processor module

• PCI cards (if present)

• modem (if present)

• AirPort card (if present)

A Warning: Be sure to
reinstall the heatsink after
completing this procedure.
Operating the computer
without the heatsink in place

j-fflj Take Apart

Logic Board, Power Mac G4 (Quicksilvers) - 48

will destroy the processor.

1 . Disconnect all cables
from the logic board.

2. Using a Phillips
screwdriver, remove
the four logic board
mounting screws.

3. Remove the three
processor module
standoffs.

-^fl Take Apart

Logic Board, Power Mac G4 (Quicksilvers) - 49

4. Slide the logic board
away from the I/O panel
to clear the board guides.

5. Tilt the logic board so
that the ports clear the
openings in the I/O panel
and lift the board out of
the computer.

Important: If you are

replacing the logic board,
transfer the processor
module, video card, PCI
cards, AirPort card,
memory cards, and modem
from the original logic board
to the replacement board.

-^fl Take Apart

Logic Board, AGP Graphics/Gigabit Ethernet/Digital Audio - 50

I — Logic Bo-and

Logic Board, AGP
Graphics/Gigabit
Ethernet/Digital Audio

Before you begin, open the
side access panel and remove
the following:

• video card

• processor module

• PCI cards (if present)

• modem (if present)

• AirPort card (if present)

Note: While the layout of the
Power Mac G4 (Digital
Audio) logic board differs
from the logic board layout
in the illustrations for this

-^fi Take Apart

Logic Board, AGP Graphics/Gigabit Ethernet/Digital Audio - 51

procedure, the steps for
removing the board are the
same.

1 . Disconnect all cables
from the logic board.

2. Using a Phillips
screwdriver, remove
the three logic board
mounting screws.

3. For Power Mac G4
(Gigabit Ethernet/
Digital Audio)
computers, remove the
three processor module
standoffs.

-^fi Take Apart

Logic Board, AGP Graphics/Gigabit Ethernet/Digital Audio - 52

4. Slide the logic board
away from the I/O panel
to clear the board guides.

5. Tilt the logic board so
that the ports clear the
openings in the I/O panel
and lift the board out of
the computer.

Important: If you are

replacing the logic board,
transfer the processor
module, video card, PCI
cards, AirPort card,
memory cards, modem, and
video card connector clip (if
present) from the original
logic board to the new board.

Logic Board, PCI Graphics - 53

Logic Board, PCI
Graphics

Before you begin, open the
side access panel and remove
the following:

• video card

• PCI cards (if present)

• modem (if present)

• FireWire board

Logic Board, PCI Graphics - 54

1 . Disconnect all cables
from the logic board.

2. Using a Phillips
screwdriver, remove
the logic board mounting
screws.

3 . Remove the standoff that
attaches to the FireWire
board.

' — Logic Board

-^fl Take Apart

Logic Board, PCI Graphics - 55

4. Tilt the logic board so
that the ports clear the
openings in the I/O
panel.

5. Lift the board out of the
computer.

Important: If you are

replacing the logic board,
you must transfer the
processor module, jumper,
video card, PCI cards,
memory cards, FireWire
board, and modem from the
original logic board to the
replace-ment board. You
must also cover the
processor jumper with a

j -ffli Take Apart

Logic Board, PCI Graphics - 56

new warranty sticker,
which comes with the
replacement logic board. See
the Take Apart topic
"Processor Module, Power
Mac G4 (PCI Graphics)."

SDRAM DIMM - 58

1 . Push down on the
connector clips to unlock
the DIMM.

2. Holding the DIMM by
both top corners, lift
straight up out of the
slot.

Warning: When removing or
installing the DIMM, handle
it only by the edges. Lift the
DIMM straight up from the
connector to remove it, and
insert the DIMM straight
down into the connector to
install it. Do not rock the
DIMM from side to side.

Hard Drive, IDE /ATA - 59

Hard Drive, IDE /ATA

Before you begin, open the
side access panel.

Note: The Power Mac G4
supports a total of three
internal hard drives. It can
accommodate up to two Ultra
ATA drives in drive bay 3,
near the rear of the
computer. ATA drives are
not supported in drive bay 1
or 2.

Note: You must assign a SCSI
ID number to every
additional hard drive and the
number must not conflict

j -ffli Take Apart

Hard Drive, IDE /ATA - 60

with the ID number already
assigned to another drive.
One factory-installed drive
has ID 0; a second factory-
installed drive has ID 1 .

Hard Drive, IDE /ATA - 61

1 . Disconnect the Ultra ATA
hard drive data cable and
the hard drive power
cable (P3) from the
hard drive.

-^fl Take Apart

Hard Drive, IDE /ATA - 62

2. Remove the hard drive
carrier mounting screw.

3. Pull the drive carrier
back and lift up at an
angle to release the
carrier tabs from the
slots in the chassis.

4. Remove the carrier and
drive from the
computer.

Hard Drive, IDE /ATA - 63

5. If you're returning the
drive to Apple, remove
the screws that mount
the hard drive to the
carrier.

6. Lift the hard drive from
the carrier.

Note: Drives must be
returned to Apple in Apple
packaging, without cables or
carriers. Failure to comply
with this requirement may
result in a packaging
noncompliance charge. For
more information, refer to
the service parts database.

-^fl Take Apart

Hard Drive, IDE /ATA - 64

Replacement Note: To install
two drives in the U-shaped
carrier, install the first
drive in the bottom of the
carrier. Then place the
second drive in the carrier's
upper bay and attach screws
through the sides of the
carrier into the sides of the
drive. Note that tightening
screws on the left side of the
carrier bends the arms of
the carrier into the drive,
holding it securely.

Hard Drive, IDE /ATA - 65

Replacement Note: When
reconnecting a dual-drive
ATA cable to drives installed
in a U-shaped carrier, be
sure to attach the end
connector to the drive in the
bottom of the carrier.

-^fl Take Apart

Hard Drive, Ultra2 LVD SCSI - 66

Hard Drive, Ultra2
LVD SCSI

Before you begin, open the
right side access panel.

Note: This computer
supports a total of three
internal hard drives. If a
unit has at least one internal
Ultra2 LVD SCSI drive, an
Ultra2 LVD SCSI PCI card,
and a SCSI data cable, you
can connect additional
internal and external Ultra2
LVD SCSI devices. The unit's
SCSI data cable supports
three internal SCSI drives;

Take Apart

Hard Drive, Ultra2 LVD SCSI - 67

this cable has a built-in
terminator so you don't need
to add one. You can connect
external Ultra2 LVD SCSI
devices to the port on the
rear of the computer.

If the computer came with
one Ultra2 LVD SCSI drive,
it's installed in drive bay 1 ,
near the front of the
computer. If it came with
two drives, the second one is
installed in bay 2. If a third
drive is installed, it's in bay
3. Usually the computer
uses the drive in bay 1 to
start up.

Take Apart

Hard Drive, Ultra2 LVD SCSI - 68

You must assign a SCSI ID
number to every additional
hard drive and the number
must not conflict with the ID
number already assigned to a
drive on the SCSI chain. One
factory-installed drive has
ID 0; a second factory-
installed drive has ID 1 ; a
third drive has ID 2. The
SCSI PCI card has ID 7.

Take Apart

Hard Drive, Ultra2 LVD SCSI - 70

2. Disconnect the SCSI hard
drive power cable (P5).

Caution: Pull the SCSI
power cable straight out
of the connector on the
drive. Any up or down
motion to the connector
could damage the drive.

Replacement Note: The

power cables attach to
drives as follows:
P5 attaches to bay 1
P2 attaches to bay 2
P3 attaches to bay 3

3. Disconnect the Ultra2
LVD SCSI data cable from
the hard drive.

-^fl Take Apart

Hard Drive, Ultra2 LVD SCSI - 71

4. Remove the hard drive
carrier mounting screw.

5. Pull the drive carrier
back and lift up at an
angle to release the
carrier tabs from the
slots in the chassis.

6. Remove the carrier and
drive from the
computer.

-^fl Take Apart

Hard Drive, Ultra2 LVD SCSI - 72

7. If you're returning the
drive to Apple, remove
the SCSI data cable and

terminator (black
plastic housing) from
the top of the drive. The
cable and terminator are
attached to the drive
with double-stick foam
tape.

Take Apart

Drive
Carrier

Hard Drive, Ultra2 LVD SCSI - 73

8. If you're returning the
drive to Apple, you must
also remove the hard
drive carrier. Remove
the four screws from the
carrier and lift out the
drive.

The rma I Pad

Hard Drive, Ultra2 LVD SCSI - 74

9. If you're replacing the
thermal pad on the
drive, remove the old
pad and apply the new
pad to the same area on
the drive.

Important: Before
installing a new 36 GB
Ultra2 LVD SCSI IBM
drive, you must apply a
thermal pad, part
number 922-3863.

Ultra2 LVD SCSI Card - 75

Ultra2 LVD SCSI Card

Before you begin, open the
side access panel.

Ultra2 LVD SCSI Card - 76

1 . Remove the Ultra2 LVD
SCSI card mounting
screw.

2. Disconnect the Ultra2
LVD SCSI cable from the
PCI card.

Note: Make sure no
external cable is
attached to the card.

3. Gently lift up on the
Ultra2 LVD SCSI card to
remove it from the PCI
slot.

Take Apart

Carrier Support Plate - 77

Cairier
Support
Plate

Carrier Support Plate

Note: Perform this
procedure only if you must
replace the support plate or
the cables below the plate.

Before you begin, do the
following:

• Open the side access
panel.

• Remove the hard drive
carrier in drive bay 1 .

-^fl Take Apart

Carrier Support Plate - 78

{

1 . Remove the two support
plate mounting screws
from the bottom of the
unit.

Carrier Support Plate - 79

2. Lift the plate at an angle
and remove it from the
computer.

j-fflj Take Apart

CD/DVD Drive, Power Mac G4 (Quicksilvers) - 80

CD/DVD Drive, Power
Mac G4 (Quicksilvers)

Before you begin, open the
side access panel.

Note: You remove the drive
carrier from the computer
with the drives attached to
the carrier.

-^fl Take Apart

CD/DVD Drive, Power Mac G4 (Quicksilvers) - 82

2. Supporting the bottom of
the carrier, slide it back
and rotate it so you can
reach the drive cables.

p^n Take Apart

CD/DVD Drive, Power Mac G4 (Quicksilvers) - 83

Carefully detach the
ribbon cable tape from
the top of the carrier.

Disconnect the following
cables from the back of
the CD/DVD/Zip drives:
•ribbon cable from the

CD/DVD and Zip drives
•power cable (P6) from

the CD/DVD drive
•power cable (P7) from

the Zip drive

Remove the carrier and
drives from the
computer.

Take Apart

CD/DVD Drive, Power Mac G4 (Quicksilvers) - 84

6. Using a Phillips
screwdriver, remove
the four CD/DVD drive
carrier mounting
screws.

7. Slide the drive out of the
carrier.

CD/DVD Drive, Power Mac G4 (Quicksilvers) - 85

Replacement Note: When
inserting the drive carrier
into the computer, make
sure the pegs on the bottom
of the carrier fit into the
two notches in the drive
shelf.

Take Apart

Zip Bezel/Blank Bezel, Power Mac G4 (Quicksilvers) - 86

Zip Bezel/Blank Bezel,
Power Mac G4
(Quicksilvers)

Before you begin, open the
side access panel.

Take Apart

Zip Bezel/Blank Bezel, Power Mac G4 (Quicksilvers) - 87

From inside the chassis,
behind the front panel,
push the bezel tab
forward to release the
right side of the bezel.

Disconnect the hook on
the left side of the bezel
from the front panel and
remove the bezel from
the computer.

j-fflj Take Apart

Zip Drive, Power Mac G4 (Quicksilvers) - 88

Zip Drive, Power Mac
G4 (Quicksilvers)

Before you begin, open the
side access panel.

Note: You remove the drive
carrier from the computer
with the drives attached to
the carrier.

Zip Drive, Power Mac G4 (Quicksilvers) - 90

2. Supporting the bottom of
the carrier, slide it back
and rotate it so you can
reach the drive cables.

Zip Drive, Power Mac G4 (Quicksilvers) - 91

Carefully detach the
ribbon cable tape from
the top of the carrier.

Disconnect the following
cables from the back of
the CD/DVD/Zip drives:
•ribbon cable from the

CD/DVD and Zip drives
•power cable (P6) from

the CD/DVD drive
•power cable (P7) from

the Zip drive

Remove the carrier and
drives from the
computer.

-^fl Take Apart

Zip Drive, Power Mac G4 (Quicksilvers) - 93

7. Using a Phillips
screwdriver, remove
the four Zip drive
mounting screws.

8. Slide the drive out of the

-^fi Take Apart

Zip Drive, Power Mac G4 (Quicksilvers) - 94

Replacement Note: When
inserting the drive carrier
into the computer, make
sure the pegs on the bottom
of the carrier fit into the
two notches in the drive
shelf.

Take Apart CD/DVD Bezel, PCI/AGP Graphics/Gigabit Ethernet/Digital Audio - 95

-@Fl Take Apart CD/DVD Bezel, PCI/AGP Graphics/Gigabit Ethernet/Digital Audio - 96

CD /DVD/
Zp Bezel

Tab

From inside the chassis,
behind the front panel,
push the two bezel tabs
forward to release the
drive bezel from the
front panel.

Disconnect the bezel
from the hinges on the
front left side and
remove the bezel from
the computer.

Take Apart CD/DVD Drive, PCI/AGP Graphics/Gigabit Ethernet/Digital Audio - 97

i— CD /DVD Drive

CD/DVD Drive, PCI/
AGP Graphics/Gigabit
Ethernet/Digital Audio

Before you begin, do the
following:

• Open the side access
panel.

• Remove the CD/DVD drive
bezel.

Take Apart CD/DVD Drive, PCI/AGP Graphics/Gigabit Ethernet/Digital Audio - 98

Note: You remove the drive
carrier from the computer
with the drives attached to
the carrier.

1 . Remove the two screws
on the drive carrier.

2. From inside the chassis,
push the drive carrier
forward about 1 inch.

Important: The carrier may
be difficult to push forward
due to EMI tape on the
carrier's underside holding
it in place. Continue pushing
forward until the carrier is
released.

^1 Take Apart CD/DVD Drive, PCI/AGP Graphics/Gigabit Ethernet/Digital Audio - 99

CD/DVD Audio Cable — , IDE Cable

i— CD /DVD
Power Cab le
(P-7)

CD/DVD/Zp
Drive Cairier

Zp PowerCable
(Connector Underneath)

Disconnect the following
cables from the back of
the CD-ROM, DVD-ROM,
or DVD-RAM drive:
•power cable (P7)
•IDE data cable
•Power Mac G4 (PCI
Graphics): audio cable

If shielding tape connects
the ribbon cable and the
carrier, detach the tape
from the carrier.

Disconnect the following
cables from the back of
the Zip drive:
•power cable (P6)
•IDE data cable

-@Fl Take Apart CD/DVD Drive, PCI/AGP Graphics/Gigabit Ethernet/Digital Audio - 1 00

EMI Shield

6. Continue sliding the
drive carrier out of the
computer. Important:
The drive carrier may
be difficult to push
forward due to the EMI
gasket and tape located on
the underside of the
carrier (directly below
the Zip drive).

7. When the carrier is out
of the computer, remove
the EMI shield from the
back of the CD-ROM,
DVD-ROM, or DVD-RAM
drive.

Take Apart CD/DVD Drive, PCI/AGP Graphics/Gigabit Ethernet/Digital Audio - 101

Note: Perform the following
procedure if you are
replacing the CD-ROM,
DVD-ROM, DVD-RAM, or
Zip drive.

8. Using a Phillips
screwdriver, remove
the drive carrier
mounting screws.

9. Slide the drive(s) out of
the carrier.

Replacement Note: The

DVD-RAM drive is not as
tall as the CD-ROM and
DVD-ROM drives. Before
screwing the DVD-RAM

Take Apart CD/DVD Drive, PCI/AGP Graphics/Gigabit Ethernet/Digital Audio - 1 02

drive back into the carrier,
lift the back of the drive
slightly so that the drive is
flush against the carrier.

Replacement Note: When
inserting the drive carrier
into the computer, make
sure the carrier tab slides
into the hole on the
stationary drive shelf.

Take Apart Zip Drive, PCI/AGP Graphics/Gigabit Ethernet/Digital Audio - 103

Zip Drive, PCI/AGP
Graphics/Gigabit
Ethernet/Digital Audio

If removing the Zip drive,
follow the procedures for
removing the CD/DVD Drive.

Important: After you remove
the screws mounting the
Zip/CD/DVD carrier to the
chassis, the carrier may be
difficult to push forward due
to EMI tape on the carrier's
underside holding it in place.
Continue pushing forward
until the carrier is released.

j-fflj Take Apart Fan, Power Mac G4 (Quicksilvers) - 104

Fan, Power Mac G4
(Quicksilvers)

■:y Before you begin, open the

side access panel.

Take Apart

Fan, Power Mac G4 (Quicksilvers) - 106

2. Remove the two screws
that mount the fan
bracket to the chassis.

Replacement Note: Use

the longer of the two
screws to secure the
cable holder and the fan
bracket.

3. Lift the fan bracket out
of the computer.

Power Mac G4 (Quicksilvers) - 107

Perform the following
procedure only if you are
replacing the fan.

4. Using a Phillips
screwdriver, remove
the four screws securing
the fan to the fan
bracket.

5. Lift the fan from the fan
bracket.

Take Apart

Fan, Power Mac G4 (Quicksilvers) - 108

Replacement Note: When
replacing the fan in the
bracket, make sure the
arrows on the side of the fan
point away from the bracket.

Take Apart Fan, PCI Graphics, AGP Graphics/Gigabit Ethernet/Digital Audio - 109

-^fl Take Apart Fan, PCI Graphics, AGP Graphics/Gigabit Ethernet/Digital Audio - 1 10

1 . Remove the two screws
on the fan bracket.

2. Pull the fan bracket
down to access the
power-to-fan connector.

3. Disconnect the power-
to-fan connector.

-^fi Take Apart Fan, PCI Graphics, AGP Graphics/Gigabit Ethernet/Digital Audio -111

4. Lift the fan bracket out
of the computer.

Replacement Note: The fan

bracket has two holes (on
the top) that join with two
tabs on the chassis. If the
tabs aren't inserted into the
holes, the screws that
secure the fan bracket to the
chassis won't align
properly.

Take Apart Fan, PCI Graphics, AGP Graphics/Gigabit Ethernet/Digital Audio -112

Screws-

Perform the following
procedure only if you are
replacing the fan.

5. Using a Phillips
screwdriver, remove
the four screws securing
the fan to the fan
bracket.

6. Lift the fan from the fan
bracket.

Fan Bracket

-^fi Take Apart

Power Supply, Power Mac G4 (Quicksilvers) - 1 1 3

Power Supply, Power
Mac G4 (Quicksilvers)

Before you begin, do the
following:

• Open the side access
panel.

• Remove the CD/DVD/Zip
drive carrier.

-^fl Take Apart

Power Supply, Power Mac G4 (Quicksilvers) - 1 1 5

2. Disconnect the main
power cable from the
logic board and the
power cables to any hard
drives.

Take Apart

Power Supply, Power Mac G4 (Quicksilvers) - 1 1 6

3. Using a 2.5 mm Allen
wrench, remove the
three screws on the rear
vented panel.

-^fl Take Apart

Power Supply, Power Mac G4 (Quicksilvers) - 1 20

Replacement Note: If you

are replacing the power
supply, remove the power
supply bracket and reattach
it to the new power supply.

Take Apart

Power Supply, Power Mac G4 (Quicksilvers) - 121

Take Apart Power Supply, PCI/AGP Graphics/Gigabit Ethernet/Digital Audio - 1 22

Power Supply, PCI/
AGP Graphics/Gigabit
Ethernet/Digital Audio

Before you begin, do the
following:

• Open the side access
panel.

• Remove the CD/DVD drive
bezel.

• Move the CD/DVD/Zip
drive carrier forward 1
inch.

-^fl Take Apart Power Supply, PCI/AGP Graphics/Gigabit Ethernet/Digital Audio - 1 24

Zp Drive
Power Cab le

Disconnect the following

power cables:

•cables P6 and P7 from

the CD-ROM/Zip drive
•Power Mac G4 (PCI

Graphics): cable P4

from the front panel

board

•main power cable from

the logic board
•cable(s) to hard drives

-^fl Take Apart Power Supply, PCI/AGP Graphics/Gigabit Ethernet/Digital Audio - 1 26

4. On the inside of the
chassis, remove the
screw that attaches the
power supply to the
power supply shelf.

5. Slide the power supply
forward toward the front
of the computer.
Maneuver the power
supply (clearing the
security bar on the
inside and upper
chassis) and its cables
out of the chassis.

Note: If you are replacing
the power supply, remove
the power supply bracket

Take Apart Power Supply, PCI/AGP Graphics/Gigabit Ethernet/Digital Audio - 1 27

and reattach it to the new
power supply.

Replacement Note: You must
set the power supply voltage
switch to the correct setting
(1 1 5 V in the U.S.) to avoid
damaging the computer.

-^fi Take Apart

Speaker, Power Mac G4 (Quicksilvers) - 1 28

y.f rr

' t.

Speaker, Power Mac
G4 (Quicksilvers)

Before you begin, do the
following:

• Open the side access
panel.

• Remove the carrier
support plate.

Power Mac G4 (Quicksilvers) - 1 29

Using your thumbs,
press the tabs in on the
speaker shield.

Rotate the shield and
remove it from the
chassis.

Take Apart

Speaker, Power Mac G4 (Quicksilvers) - 1 30

jffij Take Apart Speaker, PCI/AGP Graphics/Gigabit Ethernet/Digital Audio - 1 31

'.i I

Speaker, PCI/AGP
Graphics/Gigabit
Ethernet/Digital Audio

Before you begin, do the
following:

• Open the side access
panel.

• Remove the carrier
support plate.

Take Apart Speaker, PCI/AGP Graphics/Gigabit Ethernet/Digital Audio - 1 33

3. Push the speaker tab in
and pull the speaker
housing back to release
it.

4. Remove the speaker
housing from the
computer.

5. Remove the speaker
from the speaker
housing. Note: The
speaker and speaker
housing are separate
parts.

'4* lX *

-^fi Take Apart

Front Panel Board, Power Mac G4 (Quicksilvers) - 1 34

y.f rr

•§• ■ i.

Front Panel Board,
Power Mac G4
(Quicksilvers)

Before you begin, open the
side access panel.

Take Apart Front Panel Board, PCI/AGP Graphics/Gigabit Ethernet/Digital Audio -

Front Panel Board,
PCI/AGP Graphics/
Gigabit Ethernet/
Digital Audio

Before you begin, open the
side access panel.

Take Apart Front Panel Board, PCI/AGP Graphics/Gigabit Ethernet/Digital Audio -

1 . Using your thumbs,
press the tabs in on the
front panel shield.

2. Gently pull the front
panel shield away from
the chassis.

3. Disconnect the front
panel cable from the
front panel board.

4. Power Mac G4 (PCI
Graphics): Disconnect
power cable P4 and the
FireWire cable from the
front panel board.

-fiff Take Apart Front Panel Board, PCI/AGP Graphics/Gigabit Ethernet/Digital Audio -

5. Push in and pry up on
the three tiny metal tabs
to release the front panel
board from the front
panel shield.

Antenna - 1 40

Antenna

Note: The antenna is routed
through the chassis in two
ways: under the logic board
and through drive bay 1 . Do
not remove or replace the
antenna if it is routed under
the logic board. To replace
this type of antenna, you
must replace the entire
chassis.

Before you begin, remove
the following:

• top front handle

• top panel

• carrier support plate (if

Take Apart

Antenna -141

the antenna cable is
routed underneath it)
• CD-ROM drive carrier

1 . Disconnect the antenna
cable from the AirPort
card (if installed).

2. Free the antenna cable
from the cable clamp and
the fan bracket.

-^fl Take Apart

Antenna - 142

Using a jeweler's screw
driver, remove the
antenna mounting
screws and lift the
antenna and antenna
cable out of the
computer.

-^fl Take Apart

Top Handles, Front and Rear - 1 43

Top Handles, Front
and Rear

No preliminary steps are
required before you begin
this procedure.

Top Handles, Front and Rear - 1 44

1 . Using a 2.5 mm Allen
wrench, remove the two
alien screws securing
each handle.

2. Lift the handle from the
computer.

Top Handles, Front and Rear - 1 45

Handle

3 Bumps

Replacement Note: When
installing the top handles
(front and rear) orient
them so that the three tiny
bumps on the handle are in
the orientation shown in the
photo. The handle won't fit
properly if it's turned
upside down. The top front
and top rear handles are
interchangeable.

Bottom

Take Apart

Top Panel

Top Panel - 1 46

Top Panel

Before you begin, remove
the following:

• top front handle

• top rear handle

Top Panel - 1 47

1 . Slide the top panel back,
towards the power
supply, to unhook the
tabs.

2. Lift the top panel from
the chassis.

-^fi Take Apart

Supports, Front and Rear - 1 48

Supports, Front and
Rear

Before you begin, place the
computer on an ESD mat and
turn the unit upside down.

A Warning: When the
computer is upside down or
the lower supports are
removed, the computer can
be unstable.

Lower Panels, Front and Rear - 1 50

Lower Panels, Front
and Rear

Before you begin, remove
the front and/or rear
support.

.ikwarning: When the
computer is upside down or
the lower supports are
removed, the computer can
be unstable.

Lower Panels, Front and Rear - 1 51

Note: The computer is
shown upside down.

1 . Lift the lower front
panel or the lower rear
panel from the chassis.
There are no screws
holding these panels to
the chassis; the front and
rear supports hold them
in place.

Important: These panels
are keyed. The notch goes
on the access panel side.

Front
Pane I

Front Panel - 1 52

Front Panel

Before you begin, remove:

• top front handle

• lower front support and
lower front panel

• Power Mac G4 (PCI/AGP
Graphics/Gigabit
Ethernet/Digital Audio):
CD/DVD drive bezel and
CD/DVD drive carrier

• Power Mac G4
(Quicksilvers): CD/DVD/
Zip drive carrier

A Warning: When the lower
support is removed, the
computer can be unstable.

Take Apart

Front Panel - 1 53

1 . Open the side access
panel. Locate the front
panel tabs.

2. Using a screwdriver,
carefully push the front
panel tabs inward to
release them from the
chassis.

3. Pull the front panel off
the chassis.

Note: If you are installing a
new front panel on Power
Mac G4 (Quicksilvers),
transfer the blank or Zip
bezel from the original
panel to the new panel.

-^fl Take Apart

CD/DVD Drive Door, Power Mac G4 (Quicksilvers) - 1 54

CD/DVD Drive Door,
Power Mac G4
(Quicksilvers)

Before you begin, remove:

• top front handle

• lower front support and
lower front panel

• CD/DVD/Zip drive
carrier

• front panel

A Warning: When the lower
support is removed, the
computer can be unstable.

Take Apart CD/DVD Drive Door, Power Mac G4 (Quicksilvers) - 1 57

3. Using a flatblade
screwdriver, gently
press the CD/DVD door
mounting pegs flush with
the chassis.

4. Push the CD/DVD drive
door forward, and
remove the door from
the computer.

-^fl Take Apart

Rear Vented Panel - 1 58

Rear Vented Panel

Before you begin, remove
the following:

• top rear handle

• lower rear support

A Warning: When the lower
support is removed, the
computer can be unstable.

Rear Vented Panel - 1 59

1 . Open the side access
panel.

2. Remove the three 2.5
mm Allen screws.

3. Push in on the six tabs to
release the panel from
the chassis.

-^fl Take Apart

Rear Vented Panel - 1 60

4. Once the tabs are

released, carefully pull
the rear panel forward
to remove.

Latch Panel

Latch Panel - 1 61

Latch Panel

Before you begin, remove
the following:

• video card

• PCI cards (if present)

• Power Mac G4 (PCI
Graphics): FireWire
board (if present)

• Power Mac G4 (PCI
Graphics): modem (if
present)

• AirPort card (if present)

• logic board

Latch Panel - 1 62

Remove the four Phillips
screws holding the panel
to the chassis.

Slide the panel toward
the hard drives, freeing
the latch panel from the
tabs on the chassis.

Note: Circles indicate
tab locations.

Remove the latch panel.

Right Side Access Panel - 1 63

Right Side Access
Panel

Before you begin, remove
the following:

• PCI cards (if present)

• video card

• FireWire board (if
present)

• modem (if present)

• AirPort card (if present)

• logic board

Right Side Access Panel - 1 64

1. Remove the four 2.5 mm
Allen screws on the side
panel.

-^fl Take Apart

Right Side Access Panel - 1 65

2. Open the side access

Panel Latch Right Side

Pane I

-^fl Take Apart

Right Side Access Panel - 1 66

Using a flatblade
screwdriver or
needlenose pliers, push
or squeeze the plastic
tabs (protruding
through the side chassis
panel), to release the
right panel from the
metal chassis.

Remove the right side
panel from the chassis.

Left Side Panel - 1 68

1. Remove the four 2.5 mm
Allen screws on the side
panel.

Left Side Panel - 1 69

2. Open the side access
panel.

3. Remove the fan screws
and drop the fan bracket
down to access the
plastic panel tabs
(protruding through the
side chassis) on the left
side panel.

Left Side Panel - 1 70

4. Using a needlenose
pliers, squeeze the tabs
(located behind the fan
bracket) to release the
left side panel from the
metal chassis.

5. Lift the left side panel
from the chassis.

I/O Panel

I/O Panel, PCI Graphics - 1 71

I/O Panel, PCI
Graphics

Note: The I/O panel can be
removed only in Power Mac
G4 (PCI Graphics)
computers. The I/O panel in
Power Mac G4 (AGP
Graphics/Gigabit Ethernet/
Digital Audio/QuickSilver/
Quicksilver 2002) is part
of the chassis.

Before you begin, do the
following:

• Open the side access
panel.

• Remove the logic board.

Screws

Take Apart

I/O Panel Cover - 1 74

I/O Pane I Co

I/O Panel Cover

Before you begin, do the
following:

• Open the side access
panel.

• Remove the logic board.

• Power Mac G4 (PCI
Graphics): Remove the
I/O panel.

I/O Panel Cover - 1 75

Note: Because the I/O panel
cover can be difficult to
remove, take your time
prying up the plastic tabs.

1 . Using a jeweler's
screwdriver and
working from right to
left, carefully pry the
plastic tabs away from
the metal frame. As each
tab is released, pull the
I/O cover away from the
frame.

2. Remove the I/O panel
cover from the chassis.

^ Service Source

Troubleshooting

Power Mac G4/
Macintosh Server G4

Troubleshooting

General/ Block Diagrams - 1

General

Block Diagrams

Power Mac G4 (QuickSilvers/Digital Audio) Block Diagram

Processor Module

Backside

PowerPC G4
microprocessor
L2 cache : 256K 1 :1

L3 cache

Main Logic Board

SDRAM DIMM slots

133 MHz
Max bus

133 MHz
memory bus

PCI slots

UniNorth
memory
controller
and PCI
bus bridge

T T T T

Internal CD or DVD
connector

Internal Zip drive
connector

64-bit
33 MHz
PCI bus

EIDE
bus

Internal hard drive
connectors

Ultra ATA bus

Wireless
LAN slot

KeyLargo
I/O device
and disk
controller

Ethernet
PHY

Firewire
PHY

66 MHz AGP bus

Boot
ROM

AGP
4x slot

Modem slot

Tumbler
audio

PMU99
power
controller

Internal
speaker
connector

Ethernet port

Firewire port
Firewire port

USB port A
USB port B

Headphone jack

Apple speaker
mini-jack

Troubleshooting

General/ Block Diagrams - 2

Power Mac G4 (Gigabit Ethernet) Block Diagram

Processor Module

Backside

PowerPC G4

L2 cache

microprocessor

Main Logic Board

100 MHz
memory bus

SDRAM DIMM
slots

PCI slots

100 MHz
Max bus

UniNorth
memory
controller
and PCI
bus bridge

Ethernet
PHY

AGP 2x bus

32-bit
66 MHz
PCI bus

AGP
2x slot

PCI-PCI
bus bridge

T T T

Internal DVD-ROM
connector

Internal Zip drive
connector

64-bit
33 MHz
PCI bus

ATA
bus

Internal hard drive
connectors

Ultra ATA bus

PMU99
power
controller

Boot

ROM

Fi rewire
controller

Fi rewire
PHY

KeyLargo
I/O device
and disk
controller

Modem slot

Screamer
sound IC

Wireless
LAN slot

Internal
speaker
connector

Ethernet port

Fi rewire port
Firewire port

USB port A
USB port B

Microphone jack
Headphone jack

Troubleshooting

General/ Block Diagrams - 3

Power Mac G4 (AGP Graphics) Block Diagram

Processor Module

Backside

PowerPC G4

L2 cache

microprocessor

Main Logic Board

100 MHz
memory bus

SDRAM DIMM
slots

PCI slots

100 MHz
Max bus

UniNorth
memory
controller
and PCI
bus bridge

AGP 2x bus

AGP
2x slot

32-bit
66 MHz
PCI bus

PCI-PCI
bus bridge

Internal DVD-ROM
connector

Internal Zip drive
connector

64-bit
33 MHz
PCI bus

ATA
bus

Internal hard drive
connectors

Ultra ATA bus

PMU99
power
controller

Boot

ROM

Firewire
controller

Firewire
PHY

Ethernet
controller

Ethernet
PHY

KeyLargo
I/O device
and disk
controller

Modem slot

Screamer
sound IC

Wireless
LAN slot

Internal
speaker
connector

Firewire port
Firewire port

— U Ethernet port

USB port A
USB port B

Microphone jack
Headphone jack

j^yj Troubleshooting General/ Block Diagrams - 4

Power Macintosh G4 (PCI Graphics) Block Diagram

Main Logic loard

Synlnn hun

PCl-FCl
Btfdge

□r

PCI
Ar'jilur

PCI Sl«

PCItvs

MP EG -2

PCI

dmughlur board

USB
ocf*1ra>lar

Pad ting ton

ana
interrupt

Wfidrolor

Boct

drirt

2nd

Burgundy

— o

Eil'jairtaL
ccnU^laf

ATA -3
ATA PI

Zip
■drivfl

-CD

-CQTJVC
ROW

CUDA

NUfiAM
£4 KB

BMdfidarV
PCI bus

"J - PCI sigh;

USG

coflnastort
MiCrenphdmo

!:(ir:h
madam

gpnnec^ir

Troubleshooting

General/ Power-On Self Test - 5

Power-On Self Test

There is a power-on self test that resides in the ROM of the Power
Mac G4. This test automatically runs whenever the computer is
powered on after being fully shut down (the power-on self test
does not run if the machine is only restarted). If a problem is
detected during the test, you will not hear a normal startup chime.
Instead, the system will beep as explained below.

Power Mac G4 (all models except PCI Graphics):

• 1 Beep: No RAM is installed or detected.

• 2 Beeps: Incompatible RAM types are installed (for example,
both SDRAM and EDO installed).

• 3 Beeps: No RAM banks passed memory testing.

• 4 Beeps: No good boot images are detected in the boot ROM
(and/or there is a bad sys config block).

• 5 Beeps: The processor is not usable.

Troubleshooting

General/ Power-On Self Test - 6

Power Macintosh G4 (PCI Graphics):

• 1 Beep: No RAM is installed or detected.

• 2 Beeps: Incompatible RAM types are installed (for example,
both SDRAM and EDO installed).

• 3 Beeps: No RAM banks passed memory testing.

• 4 or 5 Beeps: Bad checksum for the remainder of the boot ROM
block. The ROM is bad and probably cannot be fixed.

■gfl Troubleshooting

General/ Logic Board Diagrams - 7

Logic Board Diagrams

Power Mac G4 (QuickSilvers/Digital Audio)
Logic Board Diagram

USB
Ports
A & B

Monitor SDRAM
PCI Card DIMM
Sl0ts Slot Slots

Ultra ATA -
Connector

Power-
Modem
Connector

Front Panel _.P
Board III!

Speaker

I^JJJJJJJJJti

n i n

Ethernet
Connector

FireWire
Ports (2)

AirPort
Connector

IDE

Connector

Digital Audio Jack
Headphone Jack

1 TT1

Jooo

□ □

a nn nn
nn nn

CD
CD

-Single or Dual
Processor

PMU Button
- Battery

Troubleshooting

General/ Logic Board Diagrams - 8

Power Mac G4 (AGP Graphics/Gigabit Ethernet)
Logic Board Diagram

£ O

Monitor
PCI Slots Card Slot

PMU Button

Battery

Ultra ATA
Connector

Power

Modem
Connector

Front Panel
Board

Speaker- -n

v T3 USB
I § Ports Ethernet FireWire
m m A & B Connector Ports (2)

Internal

FireWire

Port

(not included
on Gigabit
models)

AirPort IDE Processor
Connector Connector Plug-In

Slot

SDRAM
DIMM Slots

Troubleshooting

General/ Logic Board Diagrams - 9

Power Macintosh G4 (PCI Graphics) Logic Board Diagram

Monitor Card Slot
PCI Slots

J1 ATA-3
(CD/DVD-ROM -j
and Zip Drive

J15 Ultra DMA/33 —
(ATA Drives)

J23 Power— |

S5 Power ButtOu.yf-,6Cr
S4 Cuda Button/ H»

Battery /p^

Sound In & -,
Sound Out
Ports

USB

i — Ethernet Connector

Firewire Ports (2)
Firewire Card

Modem
Connector

SDRAM
DIMM Slots

J8 CD Audio^ J31 Processor J34 J25

Front Panel Plug-In Speaker Jumper Block
Board Slot (w/sticker)

-J2 Firewire
Power

Troubleshooting

General/ Logic Board Troubleshooting - 1 0

Logic Board Troubleshooting

Power Mac G4 (all models except PCI Graphics)

Processor Module

The logic board comes with a removable processor module. The
processor should rarely fail and should be replaced only as a last
resort. Processor modules can be ordered from Service.

Refer to "Processor Module" in the Take Apart chapter for more
information.

Resetting the PMU on the Logic Board

The PMU (Power Management Unit) is a microcontroller chip that
controls all power functions for the computer. The PMU is a
computer within a computer. It has memory, software, firmware,

Troubleshooting

General/ Logic Board Troubleshooting - 1 1

I/O, two crystals, and a CPU. Its function is to:

• Tell the computer to turn on, turn off, sleep, wake, idle, etc.

• Manage system resets from various commands.

• Maintain parameter RAM (PRAM).

• Manage the real-time clock.

Important: Be very careful when handling the main logic board.
Remove the battery when handling the logic board so the PMU is
not affected. The PMU is very sensitive and touching the circuitry
on the logic board can cause the PMU to crash. If the PMU crashes,
the battery life goes from about five years to about two days if the
PMU is not reset. The PMU chip is located on the underside of the
logic board at U20; refer to the Power Mac G4 (AGP Graphics/
Gigabit Ethernet/Digital Audio) Logic Board Diagrams for the
location of the PMU button.

Many system problems can be resolved by resetting the PMU chip.
Whenever you have a unit that fails to power up, follow this

Troubleshooting

General/ Logic Board Troubleshooting - 1 2

procedure before replacing any modules:

1 . Disconnect the power cord and check the battery in the battery
holder (BT1). The battery should read 3.3 to 3.7 volts. If the
battery is bad, replace the battery, wait ten seconds, and then
reset the PMU (refer to the next step). If the battery is good,
go to the next step.

2. Press the PMU reset switch (S1) once on the logic board and
then proceed to step 3. Do NOT press the PMU reset switch a
second time because it could crash the PMU chip.

3. WAIT ten seconds before connecting the power cord and
powering the computer on. If the computer powers on, go to
the next step. If the computer does not power on, there is
something else wrong with the computer; refer to the
symptom/cure chart, "Startup" in this chapter.

4. Run Apple Hardware Test and return the computer to the
customer.

Troubleshooting

General/ Logic Board Troubleshooting - 1 3

Note: This entire procedure resets the computer's PRAM. Be sure
to reset the computer's time, date, and other system parameter
settings before returning the computer to the customer.

Logic Board LEDs: Power Mac G4 (all models except PCI
Graphics)

There is one red LED on the Power Mac G4 (AGP Graphics/Gigabit
Ethernet/Digital Audio/QuickSilver/QuickSilver 2002) logic
boards. It indicates that there is power to the board and does not
imply a fault condition. Hardware such as DIMMs and PCI cards
should not be installed or removed when the LED is on.

Troubleshooting

General/ Logic Board Troubleshooting - 1 4

Power Macintosh G4 (PCI Graphics)
Processor Module

The logic board comes with a removable processor module. The
processor should rarely fail and should be replaced only as a last
resort. Processor modules can be ordered from Service.

Note that when you replace the logic board on a Power Macintosh
G4 (PCI Graphics), you must also change the processor jumper
block and warranty sticker to be compatible with the processor
module. Failure to install the jumper block properly will result
in a unit that does not boot up. No jumper block is required for
Power Mac G4 (AGP Graphics/Gigabit Ethernet/Digital Audio)
processors.

Refer to "Processor Module" in the Take Apart chapter for more
information.

Troubleshooting

General/ Logic Board Troubleshooting - 1 5

Resetting the Cuda Chip: Power Macintosh G4 (PCI
Graphics)

The Cuda is a microcontroller chip on the Power Macintosh G4
(PCI Graphics) logic board. Its function is to

• Turn system power on and off.

• Manage system resets from various commands.

• Maintain parameter RAM (PRAM).

• Manage the real-time clock.

Many system problems can be resolved by resetting the Cuda chip
(see the Symptom Charts for examples). Press the Cuda reset
button on the logic board to reset the Cuda chip. The Cuda reset
button is located on the logic board to the right of the battery.
Refer to the Logic Board Diagram earlier in this chapter for
location information. If you continue to experience system
problems, refer to "Resetting the PCI Logic Board" in this
chapter.

Troubleshooting

General/ Logic Board Troubleshooting - 1 6

Resetting the PCI Logic Board

Resetting the logic board can resolve many system problems (see
the Symptom/Cure tables for examples). Whenever you have a
Power Macintosh G4 (PCI Graphics) computer that fails to power
up, you should follow this procedure before replacing any
modules.

1 . Unplug the computer.

2. Press the Power On button on the front of the unit.

3. Open the side access panel.

4. Remove the battery from the logic board.

5. Wait at least 10 minutes before replacing the battery.

6. Make sure the battery is installed in the correct +/-
direction.

7. Reassemble the computer and test the unit.

Troubleshooting

General/ Logic Board Troubleshooting - 1 7

Note: This procedure resets the computer's PRAM. Be sure to
check the computer's time/date and other system parameter
settings afterwards.

Logic Board LEDs: Power Macintosh G4 (PCI Graphics)

There are seven diagnostic LEDs on the Power Mac G4 (PCI
Graphics) logic board. A graphic follows showing their location.

DS1 = ATA drive activity

If a CD and/or Zip are attached to the ATA bus, this LED will
illuminate at power/on restart time for a few seconds. After that,
it is unlikely it will illuminate again in a trouble-free system. If
this light stays on for a prolonged period, this is a sign of trouble
on the ATA bus. If devices are connected to the ATA bus and this LED
is dark at boot time, that is also likely a sign of trouble. If a hard
disk drive is attached to this bus, the LED flickers regularly
indicating drive activity (reads/writes).

Troubleshooting

General/ Logic Board Troubleshooting - 1 8

DS4 and DS5 = USB power for downstream devices

DS5 = USB port 1- lower

DS4 = USB port 2- upper

(There is no DS2 or DS3 on the board.)

When illuminated, these LEDs indicate that the computer is
providing power (+5 V) to downstream USB ports. USB devices do
not need to be connected in order for these LEDs to illuminate.
However, if one or both of the LEDs is not illuminated and a USB
device is/was attached (and the system has completed its boot
process), then the logic board has removed downstream power
because of a trouble condition.

Since the downstream power is controlled individually for each
port, it is possible to have these LEDs in a different state: one off
and one on. This way if one port has troubled USB devices, the

Troubleshooting

General/ Logic Board Troubleshooting - 1 9

other port can still be functional. These LEDs are not immediately
illuminated at the beginning of a restart or cold power-on. During
a successful/normal boot, the sequence will look like:

1 . Unit is powered on and other LEDs will illuminate while DS4
and DS5 are off.

2. Then DS4 and DS5 on for a second or two

3. Then off very briefly (1 second)

4. Then back on (confirms secondary PCI bus is initialized and
power now available)

These two LEDs are often useful when troubleshooting an
unpredictable system. If they stay on (step 4) then the secondary
PCI bus has been initialized which happens relatively late in the
boot/hardware initializing process.

|7j?j Troubleshooting General/ Logic Board Troubleshooting - 20

DS6 = Ultra ATA bus activity
DS6 indicates Ultra ATA bus activity.
DS7 & DS8 = Power Indication

In a working unit, these LEDs should be in sync with each other:
both on or both off. If one LED is on and the other is off, there is a
problem.

DS9 = CPU Bus Request

When illuminated, this LED indicates that the CPU is requesting
the bus. This LED will rarely glow as brightly as the others (like
the Ultra ATA LED) given that the CPU is not always requesting the
bus, and when it does, the period of time is short. As a result, you
may need to watch this LED much more carefully than the others to
tell if there is activity. If this LED is ever on continuously and
bright, then the system is troubled and likely hung.

|7j?j Troubleshooting General/ Power Supply Verification - 22

Power Supply Verification

To start up, the Power Mac G4 logic board requires a "trickle"
power of +5V for AGP and PCI models, +28V for Gigabit Ethernet/
Digital Audio models, or +25V for Quicksilver models. If the
system fails to start up, follow the procedure outlined below to
determine whether the problem is related to the power supply.

Note: To verify the power supply, you need a volt meter.

Verification Procedure

Follow the procedures in the Take Apart chapter to access the
power supply.

Important: For this verification procedure when connecting the
volt meter leads to specific pins, ensure the power supply cable
remains securely plugged into the power supply connector on the
logic board.

Troubleshooting

General/ Power Supply Verification - 23

1 . Plug in a known-good power cord into the back of the com-
puter. Do not turn on the computer.

2. Power Mac G4 (AGP or PCI) (see Figure 1 ):

Connect the black lead of the volt meter to pin 16 of the 20-
pin power supply connector. Connect the red lead of the volt
meter to pin 9 of the power supply connector. The volt meter
should measure approximately +5V.

If you do not get a reading of +5V, re-check the volt meter
connections and measure the voltage again. If voltage is still
not present, replace the power supply; otherwise, go to the
step 4.

If you do measure +5V on pin 9, the power supply is likely OK.
Go to the next step for further verification.

Troubleshooting

General/ Power Supply Verification - 24

+ 12VPin 10

n
i i

20 + 5V

SV TRKT, P i n Q

n
i i

1 9 + 5V

POKPin 8

n
i i

18GND

GNDPin 7

■

17GND

+ S V Pin fi

1 6GND

r.Mn pin S

15GND

+ 5V Pin 4

n
i i

1 4 [ Pow6 X.

GNDPin 3

■

13GND

+3 . 3V Pin 2

□

12-12V

+3.3VPin 1

□

11 + 3 . 3V

Figure 1. Power Supply 20-Pin Connector

Troubleshooting General/ Power Supply Verification - 25

3. Power Mac G4 (Gigabit Ethernet/Digital Audio) (see Figure
2):

Connect the black lead of the volt meter to pin 1 1 of the 22-
pin power supply connector. Connect the red lead of the volt
meter to pin 22 of the power supply connector. The volt meter
should measure approximately +28V.

If you do not get a reading of +28V, re-check the volt meter
connections and measure the voltage again. If voltage is still
not present, replace the power supply; otherwise, go to the
next step.

If you do measure +28V on pin 22, the power supply is likely
OK. Go to the next step for further verification.

Troubleshooting

General/ Power Supply Verification - 26

GNDPin 11

□

22+28V TRKL

+ 12VPin 10

□

21 + 5V

NCPin 9

□

20 + 5V

+3.3VPin 8

□

19GND

GNDPin 7

□

18GND

+5V Pin 6

□

17GND

GNDPin 5

□

16GND

+ 5VPin 4

□

15 [Power On]

GNDPin 3

□

14GND

+3 . 3V Pin 2

□

13-12V

+3.3VPin 1

□

12+3 . 3V

Figure 2. Power Supply 22-Pin Connector

Troubleshooting

General/ Power Supply Verification - 27

4. Power Mac G4 (QuickSilver/QuickSilver 2002)
(see Figure 3):

If you do not get a reading of +25V, re-check the volt meter
connections and measure the voltage again. If voltage is still
not present, replace the power supply; otherwise, go to the
next step.

If you do measure +25V on pin 22, the power supply is likely
OK. Go to the next step for further verification.

Troubleshooting

General/ Power Supply Verification - 28

+12V Pin 2

□

COM

Pin 4

+ 12VPin 1

□

COM

Pin 3

GNDPin 11

□

2 2+2 5V TRKL

+ 12VPin 10

□

21 + 5V

+ 25VPin 9

□

20 + 5V

+3.3VPin 8

□

19GND

GNDPin 7

□

18GND

+5V Pin 6

□

17GND

GNDPin 5

□

16GND

+ 5VPin 4

□

15 [Power On]

GNDPin 3

□

14GND

+3 . 3V Pin 2

□

13-12V

+3.3VPin 1

□

12 + 3 . 3V

Figure 3. Power Supply 22-Pin Connector and 4-Pin Connector

Note: The four-pin connector (P4) supplies power to the
multiprocessor.

Troubleshooting

General/ Power Supply Verification - 29

5. Start up the computer by pressing the power button on the
front of the computer. Note: Verify that the power cable is
plugged into connector J30.

If the computer starts up normally, the power supply is OK. If
the computer does not start up, go to the next step.

6. Check to see if the power supply fan is spinning. If it is not, go
to the next step.

7. Connect the black lead of the volt meter to pin 1 6 of the power
supply connector for AGP and PCI models or pin 1 1 for Gigabit
Ethernet/Digital Audio/QuickSilver/QuickSilver 2002 mod-
els. Connect the red lead of the volt meter to pin 1 of the power
supply connector. The volt meter should measure approxi-
mately +3.3V.

If you do not get a reading of +3.3V, re-check the volt meter
connections and measure the voltage again. If voltage is still

Troubleshooting

General/ Power Supply Verification - 30

not present, replace the power supply; otherwise, go to the
next step.

8. Connect the black lead of the volt meter to pin 1 6 of the power
supply connector for AGP and PCI models or pin 1 1 for Gigabit
Ethernet/Digital Audio/QuickSilver/QuickSilver 2002 mod-
els. Connect the red lead of the volt meter to pin 4 of the power
supply connector. The volt meter should measure approxi-
mately +5V.

If you do not get a reading of +5V, re-check the volt meter
connections and measure the voltage again. If voltage is still
not present, replace the power supply; otherwise, go to the
next step.

9. Measure the voltage of pin 10 on the power supply connector.
The voltage should measure approximately +12V.

If you do not get a reading of +12V, re-check the volt meter

Troubleshooting

General/ Power Supply Verification - 31

connections and measure the voltage again. If voltage is still
not present, replace the power supply; otherwise, go to the
next step.

1 0. The testing is complete. You have just verified that the power
supply is not the cause of the "No apparent power" symptom.

Troubleshooting

General/ SDRAM DIMMs - 32

SDRAM DIMMs

The Power Mac G4 uses the following types of SDRAM DIMMs:

PC-100 DIMMs from recent Power Macintosh G3 computers are
compatible with Power Mac G4 (PCI Graphics/AGP Graphics/
Gigabit Ethernet) computers; DIMMs in older Macintosh
computers are not. Do not use older DIMMs even if they fit into the
Power Mac G4 DIMM slots. Power Mac G4 (Digital Audio)
computers must use PC-133 DIMMs, not PC-100 DIMMs.

PCI/ AGP/Gigabit Ethernet

PC-100 SDRAM
3.3 volt unbuffered
1 68-pin
64-bit wide

QuickSilvers/Digital Audio

PC-133 SDRAM
3.3 volt unbuffered
1 68-pin
64-bit wide

Troubleshooting

General/ SDRAM DIMMs - 33

Power Mac G4 (all models except PCI Graphics)

Four slots on the Power Mac G4 (AGP Graphics/Gigabit Ethernet)
logic boards accept 64, 128, 256, or 512 MB DIMMs. Three slots
on the Power Mac G4 (Digital Audio/QuickSilver/QuickSilver
2002) board accept 64, 128, 256, or 512 MB DIMMs. Any 256
MB DIMMs must be 128 or 256 Mbit technology; 512 MB DIMMs
must be 256 Mbit technology.

Power Macintosh G4 (PCI Graphics)

Four slots on the Power Macintosh G4 (PCI Graphics) logic board
accept 8, 16, 32, 64, 128, and 256 MB DIMMs. Any 128 MB
DIMMs must be 64 or 128 Mbit technology; 256 MB DIMMs must
be 128 Mbit technology.

Troubleshooting

General/ PCI Cards - 34

PCI Cards

Video Card Installation

Power Mac G4 computers require an I/O video card that moves
video from the main logic board. The card is installed in slot #1 on
the logic board, as illustrated below. Slot #1 on the Power
Macintosh G4 (PCI Graphics) is a PCI slot; slot #1 on the other
models of Power Mac G4 is an AGP slot. Refer to the Symptom
Charts for details on troubleshooting video cards.

Troubleshooting

General/ PCI Cards - 35

Power Mac G4 (QuickSilvers/Digital Audio)

Slots #2-5 Slot #1

I — |5£i — I as
• ' — '®' — 1 s<xa o

LJ_ rlUUUUb
■ g n

Power Mac G4 (PCI Graphics/AGP Graphics/Gigabit Ethernet)

Troubleshooting

General/ PCI Cards - 36

Cleaning Procedure for Card Connectors

It is possible for residue to build up on the gold edge connector
pins on some cards, which could cause a variety of symptoms.

If you are having problems with a card, inspect the connector pins
with a magnifying glass. If you find residue, use a pencil eraser or
the chemical cleaner "stabilant" (see TIL article 10468) to
gently clean the pins. Remember, never handle the cards by the
gold connectors.

Troubleshooting

General/ VGA-to-Macintosh Adapters - 37

VGA-to-Macintosh Adapters

To avoid "No video" or "Black screen" situations, do not use two
VGA-to-Macintosh adapters (one on each end) on the video cable
that connects a Power Mac G4 computer to a monitor with a
captive VGA connector.

If you need to connect a VGA monitor, connect it in one of the
following ways:

• VGA monitor --> to a VGA cable with VGA connectors on both
ends --> to the video card on the Power Mac G4

• VGA monitor --> to a mixed cable, a cable that has a VGA
connector on one end and a Macintosh connector on the other end
--> to the video card on the Power Mac G4

Troubleshooting

Symptom Charts/ How to Use the Symptom Charts - 38

Symptom Charts

How to Use the Symptom Charts

The Symptom Charts included in this chapter will help you
diagnose specific symptoms related to the product. Because cures
are listed on the charts in the order of most likely solution, try
the cures in the order presented. Verify whether or not the
product continues to exhibit the symptom. If the symptom
persists, try the next cure. Note: If you have replaced a module,
reinstall the original module before you proceed to the next cure.

In addition, refer to the Diagnostics page of Service Source at
Service Source Online (http://service.info.apple.com) for
information on diagnostic tools that can help you isolate hardware
problems.

For other assistance, contact Apple Technical Support.

Troubleshooting

Startup

Symptom Charts/ Startup - 39

System is completely 1 Verify the power outlet is good,
dead (no fan 2 Replace the power cord.

movement and power- 3 Make sure the voltage switch on the back of the power supply
on button is not lit) is set to the correct voltage.

4 Check for trickle voltage on the power supply connector.
Refer to "Power Supply Verification" in this chapter. If
verification fails, replace the power supply.

5 Disconnect external devices, including the monitor, and start
up the computer.

6 Remove internal cards and start up the computer.

7 Disconnect internal hard drives from the logic board and
start up the computer.

8 Check the modem connector (J27). If the connector has any
bent pins, replace the logic board.

9 Replace the logic board.

Troubleshooting

Symptom Charts/ Startup - 40

Memory error 1
message appears on 2
the screen

Reseat the DIMMs.

Verify that only SDRAM DIMMs are installed. Use PC-100
DIMMs on Power Mac G4 (PCI/AGP/Gigabit Ethernet) and
PC-133 DIMMs on Power Mac G4 (Digital Audio/
Quicksilvers).

Run Apple Hardware Test. If the test finds bad memory,
replace the DIMMs one at a time and test until all bad DIMMs
are replaced with known-good modules.

Flashing question
mark appears on the
screen

4
5

Start up from the system restore CD and check to see if the
hard drive shows up on the desktop. If it does, go to step 2. If
it does not, go to step 4.

Mac OS X: Run Disk Utility. Mac OS 9: Run Disk First Aid.

Update the driver and restart the computer.

Reinstall system software using the system restore CD that

came with the computer.

Reseat the hard drive data and power cables.

Replace the hard drive.

Troubleshooting

Symptom Charts/ Startup - 41

Computer begins to
power up, the fan and
hard drive are
spinning, the power
LED is lit, but there
is no startup chime or
video

3
4
5
6

Reset the logic board.

• Power Mac G4 (AGP Graphics): Refer to "Resetting the
PMU on the Logic Board" in this chapter.

• Power Macintosh G4 (PCI Graphics): Refer to "Resetting
the PCI Logic Board" in this chapter.

Power Macintosh G4 (PCI Graphics): Check the jumper block
at J25. Make sure the jumper is the correct color for the
processor type, includes all required inner metal clips, and
is installed in the correct direction. See "Processor Module"
in Take Apart for more information.
Reseat the processor module.
Verify all PCI and AGP cards are seated properly.
Replace the processor module.
Replace the logic board.

-ffl Troubleshooting

Symptom Charts/ Startup - 42

System shuts down 1 Make sure the power cord is plugged in firmly,

intermittently 2 Check that the power source is turned on and the correct

voltage is present.

3 Replace the power cord.

4 Make sure the air vents are clear.

5 Check that the fan cable is connected and the fan is
operational.

6 Check that the heatsink is properly attached to the processor.

7 Power Macintosh G4 (PCI Graphics): Reset the Cuda chip. See
"Resetting the Cuda Chip" in this chapter.

8 Reset the logic board:

• Power Mac G4 (AGP Graphics): Refer to "Resetting the
PMU on the Logic Board" in this chapter.

• Power Macintosh G4 (PCI Graphics): Refer to "Resetting
the PCI Logic Board" in this chapter.

9 Replace the power supply.
1 0 Replace the logic board.

Troubleshooting

Symptom Charts/ Startup - 43

System shuts down
almost immediately
after startup

5
6

Power Macintosh G4 (PCI Graphics): Reset the Cuda chip. See
" Resetting the Cuda Chip" in this chapter.
Reset the logic board:

• Power Mac G4 (AGP Graphics): Refer to "Resetting the
PMU on the Logic Board" in this chapter.

• Power Macintosh G4 (PCI Graphics): Refer to "Resetting
the PCI Logic Board" in this chapter.

Check the modem connector (J27). If the connector has any
bent pins, replace the logic board.
Replace the processor module.
Replace the power supply.
Replace the logic board.

Troubleshooting

Symptom Charts/ Startup - 44

System quits or stops

responding

intermittently

1 If the system quits or stops responding in a specific
application, replace the application. Mac OS X: Verify the
application is compatible with OS X.

2 Clear parameter RAM. Hold down Command-Option-P-R
during startup until you hear a second startup chime.

3 Perform a clean install of system software with the system
restore CD that came with the computer.

4 Mac OS 9: Start up with extensions off to determine if there
are system extension or control panel problems.

5 Mac OS X: Relaunch Finder.

6 Mac OS X: Run Disk Utility. Mac OS 9: Run Disk First Aid.

7 Run Apple Hardware Test in loop mode (Control-L) for an
extended time to test the memory. If the test finds bad
memory, replace the DIMMs one at a time and test until all
bad DIMMs are replaced with known-good modules.

8 Reset the logic board.

• Power Mac G4 (AGP Graphics): Refer to "Resetting the
PMU on the Logic Board" in this chapter.

• Power Macintosh G4 (PCI Graphics): Refer to "Resetting
the PCI Logic Board" in this chapter.

9 Replace the processor module.
1 0 Replace the logic board.

At startup, power-on
LED and computer
stay on only as long as
button is held in;
when button is
released, LED goes off
and computer powers
down.

Power Mac G4 (Quicksilver and Quicksilver 2002):

1 Reseat the processor module.

2 Replace the processor module.

3 Replace the logic board.

4 Replace the power supply.

Power Mac G4 (Digital Audio):

5 Replace the power supply.

6 Reseat the processor module.

7 Replace the logic board.

8 Replace the processor module.

■gfl Troubleshooting

Symptom Charts/ Error Tones - 45

Error Tones

Note: Error tones occur before system software loads.

Computer beeps once One beep means that no RAM is installed or detected,
at startup 1 If no DIMM is present, install a known-good DIMM in the top

slot and try again.

2 Reseat the DIMMs.

3 Run Apple Hardware Test. If the test finds bad memory,
replace the DIMMs one at a time and test until all bad DIMMs
are replaced with known-good modules.

4 Reseat the processor module.

5 Replace the processor module.

6 Replace the logic board.

Troubleshooting

Symptom Charts/ Error Tones - 46

Computer beeps twice
at startup

Two beeps means that incompatible RAM types may be installed.
Verify that only SDRAM DIMMs are installed. Use PC-100 DIMMs
on Power Mac G4 (PCI/AGP/Gigabit Ethernet) and PC-133
DIMMs on Power Mac G4 (Digital Audio/QuickSilvers).

2
3
4

Run Apple Hardware Test. If the test finds bad memory,
replace the DIMMs one at a time and test until all bad DIMMs
are replaced with known-good modules.
Reseat the processor module.
Replace the processor module.
Replace the logic board.

Computer beeps three
times at startup

Three beeps means that no RAM banks passed memory testing.

2
3
4

Troubleshooting Symptom Charts/ Error Tones - 47

Computer beeps four Four or five beeps means that the ROM is probably bad and cannot
or five times at be fixed.

startup 1 Replace the processor module.

2 Replace the logic board.

■gfl Troubleshooting

Symptom Charts/ Video - 48

Video

Screen is black, but
startup chime is
present, drive
operates, fan is
running, and LED is
lit

1 Check video cable/card connections and connector pins.

2 Test with a known-good monitor. Replace the monitor, if
necessary.

3 Remove all third-party devices.

4 Reseat the video card.

5 Power Macintosh G4 (PCI Graphics): Check the jumper block
at J25. Make sure the jumper is the correct color for the
processor type, includes all required inner metal clips, and
is installed in the correct direction. See "Processor Module"
in Take Apart for more information.

6 Clear parameter RAM. Hold down Command-Option-P-R
during startup until you hear a second startup chime.

7 Power Macintosh G4 (PCI Graphics): Reset the Cuda chip. See
"Resetting the Cuda Chip" in this chapter.

8 Reset the logic board:

• Power Mac G4 (AGP Graphics): Refer to "Resetting the
PMU on the Logic Board" in this chapter.

• Power Macintosh G4 (PCI Graphics): Refer to "Resetting
the PCI Logic Board" in this chapter.

9 Replace the video card.
1 0 Replace the logic board.

Troubleshooting

Symptom Charts/ Video - 49

Screen is black, there
is no startup chime,
and drive does not
operate, but fan is
running and LED is lit

1 Power Macintosh G4 (PCI Graphics): Check the jumper block
at J25. Make sure the jumper is the correct color for the
processor type, includes all required inner metal clips, and
is installed in the correct direction. See "Processor Module"
in Take Apart for more information.

2 Check video cable/card connections and connector pins.

3 Power Macintosh G4 (PCI Graphics): Reset the Cuda chip. See
"Resetting the Cuda Chip" in this chapter.

4 Reset the logic board:

• Power Mac G4 (AGP Graphics): Refer to "Resetting the
PMU on the Logic Board" in this chapter.

• Power Macintosh G4 (PCI Graphics): Refer to "Resetting
the PCI Logic Board" in this chapter.

5 Reseat the video card.

6 Reseat the processor module.

7 Replace the processor module.

8 Replace the logic board.

I Troubleshooting

Symptom Charts/ Video - 50

Startup chime is
present and screen
lights up, but screen
is gray

3
4
5
6
7

Power Macintosh G4 (PCI Graphics): Reset the Cuda chip. See
"Resetting the Cuda Chip" in this chapter.
Reset the logic board:

• Power Mac G4 (AGP Graphics): Refer to "Resetting the
PMU on the Logic Board" in this chapter.

• Power Macintosh G4 (PCI Graphics): Refer to "Resetting
the PCI Logic Board" in this chapter.

Reseat all PCI cards
Reseat all DIMMs.
Reseat the processor module.
Replace the processor module.
Replace the logic board.

Troubleshooting

Symptom Charts/ Video - 51

Distorted Video

1 Make sure that the video card driver and firmware are
updated to the most recent versions.

2 Refer to the adjustments section of the service manual or
owner's manual for the monitor. Adjust monitor as
necessary.

3 Third-party monitors: Try a known-good monitor.

4 Reseat the video cable.

5 Reseat the video card.

6 Check the video adapter, if present. Refer to "VGA-to-
Macintosh Adapter" earlier in this chapter.

7 Replace the video card.

Troubleshooting

Symptom Charts/ Video - 52

Screen jitter 1

2
3

5
6
7

Verify there are no environmental factors causing jitter.
Check all cable connections.

Make sure that the video card driver and firmware are

updated to the most recent versions.

Test with a known-good monitor. Replace the monitor, if

necessary. Refer to the appropriate monitor manual to

troubleshoot a defective monitor.

Reseat the video card.

Replace the video card.

Replace the logic board.

-ffl} Troubleshooting

Sound

Symptom Charts/ Sound - 53

No sound from 1 Disconnect any microphones or external speakers,

computer's internal 2 Verify the volume is set appropriately in the Sound system
speaker preference or Sound control panel and mute is not checked.

3 Mac OS 9: Start up with all third-party extensions off.
Troubleshoot the extensions.

4 Clear parameter RAM. Hold down Command-Option-P-R
during startup until you hear a second startup chime.

5 Verify the speaker cable is plugged into the logic board.

6 Plug headphones or external speakers into the external jack.
If the external jack works, replace the internal speaker. If
the external jack doesn't work, replace the logic board.

Troubleshooting

Symptom Charts/ Sound - 54

No sound from Apple
Pro Speakers when
attached to a Power
Mac G4 (Digital
Audio/QuickSilvers)
computer

Push on the Apple Pro Speaker jack to make sure it is firmly
inserted into the Apple Speaker sound output port. (The Apple
Pro Speaker jack has two detents. You should feel them as you
push the jack into the sound output port. Giving the jack a
slight twist while inserting it into the port may make a
better connection.)

Verify the speaker volume and balance are set appropriately
in the Sound system preference or Sound control panel and
mute is not checked.

Clear parameter RAM. Hold down Command-Option-P-R
during startup until you hear a second startup chime.
Reinstall system software.
Replace the Apple Pro Speakers.

-ffli Troubleshooting

Symptom Charts/ Hard Drive - 55

Hard Drive

Single internal ATA
hard drive does not
spin; flashing
question mark
displays on screen

1 Check all cable connections to the hard drive.

2 Try another power connector on the power cable harness. If
the power cable is defective, replace the power supply.

3 Replace the hard drive. If the problem is resolved, make sure
the driver and system software are updated to the most recent
versions.

No internal SCSI
drives show up on the
desktop

1 Check that the drive shows up in Apple System Profiler. If it
does, go to step 2. If it does not, go to step 5.

2 Update the drivers.

3 Verify there are no duplicate SCSI device addresses on a
single SCSI bus.

4 Disconnect external SCSI devices and check for proper
termination.

5 Reseat the SCSI PCI card and verify the data cable is seated
firmly in the card and drives.

6 Check internal SCSI termination. Internal drives should not
be terminated; the SCSI cable should have termination at the
end.

7 If more than one SCSI device is on the SCSI chain, remove one
device at a time and retest. Replace the bad drive.

8 Replace the internal SCSI data cable.

9 Replace the SCSI PCI card.

1 0 Try another connector on the power cable harness. If there is
a bad connector on the harness, replace the power supply.

No external SCSI
drive shows up on
desktop

3
4
5
6
7
8

Verify there are no duplicate SCSI device addresses.
Verify the total cable length does not exceed the maximum
total cable length for the SCSI card. See Knowledge Base
article 58204.

Reseat the SCSI cable going to the SCSI card.

Replace the terminator on the external SCSI device.

Reseat the SCSI card.

Replace the SCSI card.

Replace the SCSI drive cables one at a time.

Disconnect the external SCSI chain. Using known-good cables,

reattach devices one at a time.

-ffli Troubleshooting

Symptom Charts/ CD/DVD Drives - 56

CD/DVD Drives

CD/DVD drive tray
won't open

1 Reseat the drive data and power cables on the back of the CD/
DVD drive.

2 Verify the CD/DVD drive bezel is properly seated.

3 Reseat the drive data cable on the logic board.

4 Try using a known-good disc.

5 Replace the CD/DVD drive.

CD/DVD drive icon
does not appear on the
desktop

1 Check to see if the CD/DVD drive shows up in Apple System
Profiler. If it does, go to step 2. If the drive does not show up
in Apple System Profiler, go to step 7.

2 Try using a known-good disc.

3 If there is a disc stuck in the tray, eject it by restarting the
computer while holding down the mouse button. Or eject the
disc using the manual eject hole; refer to the user's manual.
For Power Mac G4 (Quicksilvers), see Knowledge Base
article 8821 5.

4 Turn off all third-party extensions.

5 Verify the firmware is the most recent version for that
drive. Check Software Downloads for any current update.

6 Reinstall system software.

7 Reseat the drive data and power cables on the back of the CD/
DVD drive.

8 Try another connector on the power cable harness. If there is
a bad connector on the harness, replace the power supply.

9 Replace the CD/DVD drive.

1 0 Replace the logic board only if other devices on the bus do not
work.

Troubleshooting

Symptom Charts/ Zip Drive - 57

Zip Drive

Zip drive does not 1 Check that the Zip drive shows up in Apple System Profiler,

show up on desktop If it does, go to step 2. If it does not, go to step 6.

2 Mac OS 9: Make sure the driver is turned on in Extensions
Manager.

3 Replace the Zip disk with a known-good disk.

4 Check that the Zip drive shows up in Apple System Profiler
as ID = 1 (slave). If it does not, check the connector. There
should be no jumper on the 6-pin device setting's connector.

5 Reinstall system software.

6 Reseat the drive data and power cables on the back of Zip
drive.

7 Replace the Zip drive.

8 Replace the drive data cable.

9 Try another connector on the power cable harness. If there is
a bad connector on the harness, replace the power supply.

Troubleshooting Symptom Charts/ Zip Drive - 58

Zip disk ejects 1 Replace the Zip disk with a known-good disk.

immediately after 2 Reseat the drive data and power cables on the back of the Zip

being inserted drive.

3 Check that the Zip drive shows up in Apple System Profiler
as ID = 1 (slave). If it does not, check the connector. There
should be no jumper on the 6-pin device setting's connector.

4 Reinstall system software.

5 Replace the drive data cable.

6 Replace the Zip drive.

Zip disk does not eject 1 Use the manual eject hole on the Zip drive to eject the stuck

disk. Examine the disk for damage. Restart the computer, and
hold down the manual eject button throughout the entire
startup process. Once the system has started up, insert a
known-good Zip disk and try ejecting it by dragging the disk
icon to the trash can.

2 Reseat the Zip drive bezel so the bezel slot aligns correctly.

3 Reinstall system software.

4 Replace the Zip drive.

5 Replace the drive data cable.

Zip drive runs
continuously

2
3

Replace the Zip disk with a known-good disk.
Replace the Zip drive.
Replace the drive data cable.

Troubleshooting

USB Devices

Symptom Charts/ USB Devices - 59

At startup, cursor
does not move with the
Apple mouse

1 Verify that mouse and keyboard connections are secure.

2 Mechanical mouse: Inspect the inside of the mouse for buildup
of dirt or other contaminants. Clean the mouse if necessary.
See Knowledge Base article 6491.

3 If the mouse is connected to the keyboard, connect the mouse
to one of the USB ports on the I/O panel instead. If the mouse
works, replace the keyboard.

4 Replace the mouse.

5 If the mouse is connected to one of the USB ports on the I/O
panel, switch to the other USB port. If the mouse operates
correctly, the first port was bad. Replace the logic board.
Note: You can also use Apple System Profiler to verify USB
ports.

Troubleshooting

Symptom Charts/ USB Devices - 60

No response to any
key on keyboard

5
6

7
8

Verify that keyboard and mouse connections are secure.
Remove all USB devices, except the keyboard and mouse. If
the keyboard operates correctly, troubleshoot the other USB
devices.

Switch the keyboard to a different USB port. If the keyboard
operates correctly, the first port was bad. Replace the logic
board. Note: You can also use Apple System Profiler to verify
USB ports.

Mac OS 9: Start up with extensions off. If the problem is
resolved, troubleshoot the extensions.
Mac OS X: Relaunch Finder.

Start up from the system installation CD or system restore
CD that came with the computer. If the keyboard operates,
reinstall system software.
Replace the keyboard.
Replace the logic board.

Troubleshooting

Symptom Charts/ USB Devices - 61

USB printer does not
operate

6
7
8
9

Verify that connections to the printer and computer are
secure.

Switch the printer to a different USB port. If the printer
operates correctly, the first port was bad. Replace the logic
board. Note: You can also use Apple System Profiler to verify
USB ports.

Verify the correct versions of the system software and
printer driver are installed.

Mac OS X: Use Print Center to verify that you have the

correct printer selected. Mac OS 9: Use Chooser to verify that

you have the correct printer selected.

If the printer is connected to a third-party USB hub, switch

it to one of the USB ports on the I/O panel. If the printer

operates, the hub is bad.

Mac OS 9: Turn off unnecessary extensions.

De-install and then re-install the print driver.

Replace the printer interface cable.

Replace the printer.

1 0 Replace the logic board.

■gfl Troubleshooting

Symptom Charts/ FireWire Devices - 62

Fire Wire Devices

No external FireWire
device icon appears on
the desktop

7
8
9

Verify that the FireWire device is turned on and the FireWire
cable is securely connected to the device and the computer.
If the device requires external power, make sure it is plugged
in.

Check that the FireWire device is listed in Apple System
Profiler. If it is, go to step 4. If it is not, go to step 5.
Check the FireWire device documentation to see if additional
drivers are required. If so, make sure the drivers are
installed.

Check for broken pins, dust, dirt, or wear on both FireWire
cable connectors, the device FireWire port, and the computer
FireWire port.

Reconnect the FireWire device to another FireWire port on
the computer. If the computer has a bad FireWire port,
replace the logic board.
Replace the FireWire cable.
Replace the FireWire device.
Replace the logic board.

Troubleshooting

Symptom Charts/ Network Problems - 63

Network Problems

Unable to see any 1 Try a known-good Ethernet cable.

network devices or 2 Open the AppleTalk or TCP/IP system preference or control

connection drops off panel and select the Ethernet option. Verify that you can now

line by itself see devices on the network.

3 Clear parameter RAM. Hold down Command-Option-P-R
during startup until you hear a second startup chime.

4 Start up from the system installation CD or system restore
CD that came with the computer. Open the AppleTalk or TCP/
IP system preference or control panel and select the Ethernet
option. Are you able to switch to Ethernet and see Ethernet
devices on the network? If so, troubleshoot software
extensions or reinstall system software.

5 Try connecting to a known-good Ethernet port at the wall or
external hub.

6 Verify that other users are experiencing the same problem. If
so, contact the network administrator.

7 Replace the logic board.

Troubleshooting

Modem

Symptom Charts/ Modem - 64

The internal modem is
not recognized

1 Make sure the correct CCL and extension files are installed.

2 Reseat the modem and modem cable.

3 Reinstall the CCL and modem extension. If the problem
persists, reinstall the system software.

4 Clear parameter RAM. Hold down Command-Option-P-R
during startup until you hear a second startup chime.

5 Replace the modem.

System reports a No
Dial Tone error
message

1 Verify the modem phone cable is securely connected at the
computer and the wall jack.

2 Verify the phone line is operational.

3 Replace the modem phone cable.

4 Reseat the modem and internal modem cables.

5 Replace the modem.

Troubleshooting Symptom Charts/ Modem - 65

There is a dial tone, 1 International only: Use the Modem Country Selector utility to
but the modem cannot make sure the modem is set to the correct country,

dial out 2 Open the Modem system preference or control panel and

verify that the correct modem type is selected, the sound is
On, and the dialing is set to Tone. At this point, leave the
Ignore Dial Tone setting unselected.

3 Make sure the correct driver is installed and the correct CCL
is selected and that they are not corrupted. If necessary,
reinstall the driver and/or CCL.

4 Try another cable and phone jack.

5 Verify the modem settings with the internet service provider.

6 Open the Modem system preference or control panel and
select Ignore Dial Tone. (Note: Some voice mail systems use a
beeping dial tone to notify users of waiting messages, which
can affect the modem connection.)

7 If the problem persists, reinstall the system and modem
software.

Troubleshooting

Symptom Charts/ Modem - 66

Computer freezes
when modem dials

Mac OS 9: Extensions are in conflict or the Mac OS is
corrupted. Enable only the Mac OS files in Extensions
Manager and any modem drivers needed.
If the problem persists, reinstall the system software

Modem is having
trouble connecting to
online site

International only: Use the Modem Country Selector utility to

make sure the modem is set to the correct country.

The phone line may have too much noise. If the user has a

second line, try that one. The user should contact the local

phone company and request the line be checked.

Check to make sure the TCP/IP system preference or control

panel is correctly configured for the user's internet service

provider. If it is not configured correctly, the modem may

connect but won't be able to access any sites.

Sometimes internet service providers use different servers

for dial-up/authentication and for services. If one server is

down, users may be able to log in but not access any services.

Contact the internet service provider for help.

Troubleshooting

Symptom Charts/ Modem - 67

Modem cannot connect
to remote access
server or to ISP

Verify the phone number of the server. Dial the number
using a telephone and listen for the "whistle" of a modem.
Make sure the user has set up remote access for the server
being contacted.

The user may need to create pauses while the number is being
dialed. Insert a comma between parts of the number where a
pause might be needed. For example, the following entries
cause remote access to dial "9" to get an outside line and then
pause before dialing the rest of the number:
9, 555-1 234

Modem is dropping its
connection

1 International only: Use the Modem Country Selector utility to
make sure the modem is set to the correct country.

2 Try another cable and phone jack.

3 The phone line may be too noisy to handle the higher modem
speeds. Try connecting at a slower speed or use a generic CCL
file. (If you are familiar with the CCL script language, you
can edit the modem script to force a connection at a lower
speed.) If the problem continues, contact the phone company
to report the bad phone line.

4 Check if the user has call waiting on that phone line. With
call waiting active, an incoming call can interrupt the
connection. Disable call waiting using AT commands placed in
the init string of the dialup application. Usually the string is
*70.

5 There may be a problem with the server the user is
connecting to. Servers sometimes develop problems that
disconnect users without explanation. Try calling back later
or use an alternate number if one is available. If the problem
persists, contact the internet service provider.

6 Reseat the modem and internal modem cables.

7 Replace the modem.

Troubleshooting Symptom Charts/ Modem - 68

Modem disconnects A timed disconnect setting is causing the modem to disconnect,

after a period of time Some internet service providers or software packages have a

feature that will disconnect the user after a set period of time.

Either increase this time setting or disable the feature if possible.

Contact the internet service provider or network administrator

for more information.

User does not receive
a required callback
from a server

Contact the network administrator to verify the callback
number is correct.

Verify the user has the correct modem script.

Modem is slow
responding

Too many people are using the internet services. Users need
to remember that the internet service provider has only a
limited amount of bandwidth to the internet. If many people
are dialing in, the individual's connect speed will be affected.
Check the phone line. The quality of the phone line can limit
modem performance.

• - *

# Service Source

Upgrades

Power Mac G4 /
Macintosh Server G4

Upgrades

SDRAM DIMM - 1

Installation
Procedures

SDRAM DIMM

Before you begin, open the
side access panel.

Upgrades

SDRAM DIMM - 2

DRAM Slot
Notches (1 of 4)

Ribs (inside slot)

1. Align a DRAM DIMM in
the DRAM slot so the
notches line up with the
ribs inside the slot.

2. Push the DIMM down
evenly until the ejectors
snap into place.

Note: To remove a DIMM,
push down on the slot's
ejectors until they open and
release the DIMM. Some
DRAM slots may have only
one ejector.

Important: After upgrading
memory on a new, out-of-
the-box Power Mac G4

Upgrades

SDRAM DIMM - 3

running Mac OS 9, you must
press Option-S when
restarting the computer.
This ensures the customer
will see the Setup Assistant
(a movie and setup instruc-
tions). If these keys are not
pressed down each time a
technician restarts the sys-
tem after an upgrade, the
Setup Assistant file will ex-
ecute, disable itself, and the
customer will never see it.

AirPort Card - 4

AirPort Card

Before you begin, open the
side access panel.

Note: The following
procedure applies to the
Power Mac G4 (AGP
Graphics/Gigabit Ethernet/
Digital Audio/QuickSilver)
only. You cannot install an
AirPort card in the Power
Mac G4 (PCI Graphics).

-gfil Upgrades

AirPort Card

Cli

AirPort Card - 5

If an adapter card is
installed on the AirPort
card, release the metal
clip and remove the
AirPort card from the
adapter.

Note: The adapter and
clip are not used with
the Power Mac G4.

AirPortCard Plug the \

(Barcode side antenna wire
should face up.) into the hole
in the end of the
AirPort Card.

AirPort Card - 6

2. Insert the AirPort card,
barcode side facing up,
through the opening in
the PCI card guide and
into the connector on the
logic board.

3. Connect the antenna
cable to the conector on
the end of the AirPort
card.

Important: After installing
an AirPort card on a new,
out-of-the-box Power Mac
G4 running Mac OS 9, you
must press Option-S when
restarting the computer.
This ensures the customer

jffij Upgrades

AirPort Card - 7

will see the Setup Assistant
(a movie and setup instruc-
tions). If these keys are not
pressed down each time a
technician restarts the sys-
tem after an upgrade, the
Setup Assistant file will ex-
ecute, disable itself, and the
customer will never see it.

^ Service Source

Exploded View

Power Mac G4/
Macintosh Server G4

Exploded View

Power Mac G4 (AGP Graphics)

CPU Heatsink Kit
076-0803

Modem Card
661-2186

Ultra2 LVD SCSI
Dual Chan PCI Card
661-2274

DVD-ROM Drive
661-2226

DVD-RAM Drive
661-2162

Enclosure
w/Chassis
922-4045

Speaker Housing
922-3982

Speaker.
922-4048

Front Panel
Board
922-4049

Front Panel Shield
922-3689

Hard Drive SCSI 36 GB
Ultra2 LVD 7200rpm 1.6" High
661-2185

Hard Drive Carrier
Ver. 2 076-0777

Processor Module
350 MHz 661-2278
400 MHz 661-2259,
400 MHz 661-2308 (Rev. 2)
450 MHz 661-2260,
450 MHz 661-2306 (Rev. 2)
500 MHz 661-2262

Video Card, AGP, 16 MB,
Rage 128 661-2273
Rage 128 Pro 661-2292

Battery
922-4028

Logic Board,
V.1 661-2251
V.2 661-2302

Panel Latch
922-4134

Power Supply
661-2256, 661-2303

Power Supply Bracket
922-3766

Fan 922-3295

- Fan Bracket
922-3854

PCI Slots Shield
922-3704

Modem Filter
w/cable
922-4054

Hard Drive
UltraATA
10GB 661-2247
10GB 661-2294
13GB 661-2245
20GB 661-2249
20GB 661-2299
27GB 661-2250
27GB 661-2300

U-Shaped

Carrier, Ver. 2

076-0778

Hard Drive SCSI

18 GB Ultra2 LVD

661-2203
Carrier

Support Plate

922-3871

Exploded View

COVERS

Allen Screws
Side Panels (typical)
922-3761
Left Side
Panel
922-3974

Front and Rear
Top Handle %
,922-3981-

Allen Screws Handles
and Supports (typical)
922-3759

Allen Security
Screws (3) Bar Cover
Vented 922-3760 922-3693
Rear \^ \ J__

I/O Panel
Cover
922-3978

"-ZIP Bezel
922-3966

"Blank Bezel
922-3965

~ CD/DVD
Door Frame
922-3967

Front Support
922-3971

Right Side
Access Panel
922-3975

Lower Rear Panel
922-3979

Rear Support
^ 922-3970

Enclosure with Chassis 922-4045
Rev. 2 922-4186

Note:

Logic Board, CD drive, Zip drive, power supply and hard drives are not part of the enclosure.

-^ff Exploded View

Power Mac G4 (AGP Graphics) — Screw Matrix

076-0777

Hard drive carrier, Ver. 2, and (5) screws (same as 922-3874)
{'■) Hard drive carrier to hard drive,
H) Hard drive carrier to chassis

922-3874

(!) Hard drive carrier to hard drive,
(l) Hard drive carrier to chassis

922-1203 (|
(34 total)

Modem, (1) Modem plug, (2) Carrier support plate, (1) Power supply bracket,
Latch panel, (12) Logic board, (2) Firewire board, (2) Fan guard, (3) Chassis,
) Hard drive carrier retainer, (4) PCI slot covers (same screw can be used
wjhen cards installed)

(<■)

922-2739

{i) CD/DVD drive to carrier, (4) Zip drive to carrier, (1) Bracket to power supply

922-3669

( i) Fan to fan bracket

922-3759

(!) Handles and (4) supports

922-3760

(3) Vented rear panel

922-3761

Right and left side panels

922-3762

(2) Latch to right side panel

922-3873

(2) CD/DVD/ZIP drive carrier to chassis

922-4051 (if

(3) Processor to logic board

922-4050 R

(2) Modem to logic board

922-4052 ©a

(2) Antenna

Cables

Firewire Cable (External)
922-3884

Front Panel
Cable (Flat Gray)
922-4046

Ultra ATA Cable, Dual Drive
922-3862

Adapter
Mac to VGA
tat" 922-3764

Computer
Power Cord
922-3964

Cable Modem, Phone Ice
922-3963

Ultra2 LVD SCSI
Cable 922-3861

SCSI Adapter
922-3770

Apple USB Mouse
922-3969

Apple USB Keyboard
922-4161

Exploded View

Power Mac G4 (Gigabit Ethernet)

CPU Heatsink Kit,
Dual Procesor
076-0812
CPU Heatsink Kit
076-0803

Modem Card
661-2324

Ultra 160 SCSI
Dual Chan PCI Card
661-2365

DVD-ROM Drive
661-2338, 661-2376
DVD-RAM Drive
661-2345

Enclosure
w/Chassis,Ver. 2
922-4268

Speaker Housing
922-3982

Speaker |

922-4048

Front Panel
Board, Ver. 2
922-4234

Front Panel Shield
922-3689

Hard Drive SCSI 36 GB
Ultra2 LVD 10K rpm 661-2321

Processor Module
400 MHz, Ver. 2 661-2354
450 MHz, Dual 661-2305
500 MHz, Dual 661-2325

Video Card, AGP, 16 MB,
Rage 1 28 Pro, Ver. 2
661-2330

Battery
922-4028

Logic Board,
w/Gigabit Ethernet
661-2331

Panel Latch
922-4134

Power Supply
661-2332

Power Supply Bracket
922-3766

Fan 922-3295

— Fan Bracket
922-3854

PCI Slots Shield
922-3704

Modem Filter
w/cable, Ver. 2
922-4236

Hard Drive
UltraATA
20GB 661-2333
30GB 661-2322
40GB 661-2323

U-Shaped
Carrier, Ver. 2
076-0778

Hard Drive Carrier
Ver. 2 076-0777

Carrier
Support Plate
922-3871

Exploded View

COVERS

Allen Screws
Side Panels (typical)
922-3761
Left Side
Panel
922-3974

Front and Rear
Top Handle %
922-3981 "

Top Panel
922-3976

Allen Screws Handles
and Supports (typical)
922-3759
J Allen Security

Screws (3) Bar Cover
Vented 922-3760 922-3693
Rear \t \ /
Panel
922-3977

I/O Panel

Cover

922-3978

"-ZIP Bezel
922-3966

"Blank Bezel
922-3965

- CD/DVD
Door Frame
922-3967

Front Panel
922-3973

Front Support — :
922-3971

Lower
Front
Panel
922-3980

Right Side
Access Panel
922-3975

Lower Rear Panel
922-3979

Rear Support
922-3970

Enclosure with Chassis, Ver. 2 922-4268

Note:

Logic Board, CD drive, Zip drive, power supply and hard drives are not part of the enclosure.

-^ff Exploded View

Power Mac G4 (Gigabit Ethernet) — Screw Matrix

076-0777

Hard drive carrier, Ver. 2, and (5) screws (same as 922-3874)
(4) Hard drive carrier to hard drive,
Hard drive carrier to chassis

922-3874

(|4) Hard drive carrier to hard drive,
Hard drive carrier to chassis

922-1203
(34 total)

Modem, (1) Modem plug, (2) Carrier support plate, (1) Power supply bracket,
(4) Latch panel, (12) Logic board, (2) Firewire board, (2) Fan guard, (3) Chassis,

Hard drive carrier retainer, (4) PCI slot covers (same screw can be used
w|hen cards installed)

922-2739

(4) CD/DVD drive to carrier, (4) Zip drive to carrier, (1 ) Bracket to power supply

922-3669

(4) Fan to fan bracket

922-3759

(4) Handles and (4) supports

922-3760

(3) Vented rear panel

922-3761

Right and left side panels

922-3762

(2) Latch to right side panel

922-3873

(2) CD/DVD/ZIP drive carrier to chassis

922-4051 fit

(3) Processor to logic board

922-4050

(2) Modem to logic board

Cables

Front Panel
Cable (Flat Gray)
922-4046

Firewire Cable (External)
922-3884

Ultra ATA Cable, Dual Drive
922-3862

Computer
Power Cord
922-3964

Ultra 160 SCSI
Cable 922-4274

Exploded View

Power Mac G4 (Digital Audio)

DVD-ROM Drive
661-2376
CD-RW Drive
661-2401

CPU Heatsink Kit
076-0822
076-0823

Modem Card
661-2324

Ultra3 LVD SCSI
Dual Chan PCI Card
661-2392

Enclosure
w/Chassis
922-4333

Speaker Housing
922-3982

Speaker.
922-4048

Front Panel
Board
922-4234

Front Panel Shield
922-3689

Processor Module
466 MHz 661-2402
533 MHz 661-2403
533 MHz, Dual 661-2389

Video Card

661-2330, 661-2360, 661-2408

Logic Board
661-2397

Battery
922-4028

Panel Latch
922-41 34

Power Supply
661-2412

Power Supply Bracket
922-3766

Fan 922-3295

- Fan Bracket
922-3854

PCI Slots Shield
922-4375

Modem Filter
922-4338

Hard Drive
Ultra ATA
30 GB 661-2410
40 GB 661-2394
40 GB 661-2323

Hard Drive Ultra2 LVD SCSI
36 GB 661-2396
72 GB 661-2355

U-Shaped
Carrier, Ver. 2
076-0778

Hard Drive Carrier
Ver. 2 076-0777

Carrier
Support Plate
922-3871

Exploded View

COVERS

Allen Screws
Side Panels (typical)
922-3761
Left Side
Panel
922-3974

Front and Rear
Top Handle %
922-3981 "

Top Panel
922-3976

Allen Screws Handles
and Supports (typical)
922-3759

Allen Security
Screws (3) Bar Cover
Vented 922-3760 922-3693
Rear \t \ /
Panel
922-4334

I/O Panel

Cover

922-4335

"-ZIP Bezel
922-3966

"Blank Bezel
922-3965

- CD/DVD
Door Frame
922-3967

Front Panel
922-3973

Front Support — :
922-3971

Lower
Front
Panel
922-3980

Right Side
Access Panel
922-3975

Lower Rear Panel
922-3979

Rear Support
922-3970

Enclosure with Chassis 922-4333

Note:

Logic Board, CD drive, Zip drive, power supply and hard drives are not part of the enclosure.

-^ff Exploded View

Power Mac G4 (Digital Audio) — Screw Matrix

076-0777

Hard drive carrier, Ver. 2, and (5) screws (same as 922-3874)
('■) Hard drive carrier to hard drive,
(1 ) Hard drive carrier to chassis

922-3874 (x

(4) Hard drive carrier to hard drive,
(' ) Hard drive carrier to chassis

) Modem, (1) Modem plug, (2) Carrier support plate, (1) Power supply bracket,
Latch panel, (12) Logic board, (2) Firewire board, (2) Fan guard, (3) Chassis,
) Hard drive carrier retainer, (4) PCI slot covers (same screw can be used
cards installed)

(

(4)

(

w|hen

922-2739 ($

(4) CD/DVD drive to carrier, (4) Zip drive to carrier, (1) Bracket to power supply

922-3669

(4) Fan to fan bracket

922-3759

(4) Handles and (4) supports

922-3760

(3) Vented rear panel

922-3761

Right and left side panels

922-3762

(2) Latch to right side panel

922-3873

(2) CD/DVD/ZIP drive carrier to chassis

922-4051 »

(3) Processor to logic board

922-4050 ffl

(2) Modem to logic board

Cables

Front Panel
Cable (Flat Gray)
922-4046

Firewire Cable (External)
922-3884

Ultra ATA Cable, Dual Drive
922-3862

Power Cord
922-4301

Ultra 160 SCSI
Cable 922-4274

Exploded View

Power Mac G4 (Quicksilver)

CPU Heatsink Kit
076-0823
076-0884

Modem Card
661-2324

Ultra3 LVD SCSI
Dual Chan PCI Card
661-2392

CD/DVD Drives
661-2500
661-2501
661-2502

Zip Drive

661-2545

Enclosure
w/Chassis
922-4543

Speaker

922-4560

Front Panel
Board
922-4562

Processor Module
733 MHz 661-2505
867 MHz 661-2506
800 MHZ Dual 661-2507

Video Card

661-2407, 661-2408, 661-2508
661-2515 (PCI Video Card)

Logic Board
661-2503

Battery
922-4028

Panel Latch
922-41 34

Power Supply
661-2513, 661-2514

Fan 922-3295

- Fan Bracket
922-4572

PCI Slots Shield
922-4375

Modem Filter
922-4338

Hard Drive
UltraATA
40 GB 661-2497
60 GB 661-2498
80 GB 661-2499

Hard Drive Ultra 160 SCSI
36 GB 661-2396
72 GB 661-2355

U-Shaped
Carrier, Ver. 2
076-0778

Hard Drive Carrier
Ver. 2 076-0777

Carrier
Support Plate
922-3871

Enclosure with Chassis 922-4543

Logic Board, CD drive, Zip drive, power supply and hard drives are not part of the enclosure.

Exploded View

1 2

Power Mac G4 (Quicksilver) — Screw Matrix

076-0777

hfiard drive carrier, Ver. 2, and (5) screws (same as 922-3874)
Hard drive carrier to hard drive,
) Hard drive carrier to chassis

('■)
('

922-3874

(4) Hard drive carrier to hard drive,
H) Hard drive carrier to chassis

922-2299

(2) Processor fan to I/O panel

922-4273

(2) Video card fence to video card

922-2739 tfi

(!) CD/DVD drive to carrier, (4) Zip drive to carrier, (1) Bracket to power supply

922-3669

(4) Fan to fan bracket

922-4610

(4) Handles and (4) supports

922-3760

(3) Vented rear panel

922-4611

Right and left side panels

922-3762

(2) Latch to right side panel

922-3873

(3) Drive carrier to chassis, (3) logic board to chassis, (4) PCI slot covers

922-4051 1

(3) Processor to logic board

922-4050 (f

(2) Modem to logic board

Cables

Front Panel
Cable (Flat Gray)
922-4561

IDE Cable
922-4614

Firewire Cable (External)
922-3884

SCSI Adapter
922-3770

Ultra ATA Cable, Dual Drive
922-3862

Computer
Power Cord
922-4301

Cable Modem, Phone Ice

Ultra 160 SCSI
Cable 922-4274

922-3963

USB Pro Keyboard
922-4320

USB Pro Mouse (optical)
922-4230

"^r Exploded View

Power Mac G4 (Quicksilver 2002)

CPU Heatsink Kit
076-0901
076-0902

Modem Card
661-2324

Ultra 160 SCSI
Dual Chan PCI Card
661-2365

CD/DVD Drives
661-2602
661-2603
661-2617

Processor Module
800 MHz 661-2624
933 MHz 661-2590
1 GHZ Dual 661-2591

Video Card
661-2581, 661-2594

Logic Board
661-2606

Battery
922-4028

Panel Latch
922-41 34

Power Supply
661-2513, 661-2514

Zip Drive

661-2545

Enclosure
w/Chassis
922-4543

Speaker |

922-4560

Front Panel
Board
922-4562

Hard Drive Ultra 160 SCSI
36 GB 661-2592
72 GB 661-2593

Fan 922-3295

- Fan Bracket
922-4572

PCI Slots Shield
922-4375

Modem Filter
922-4338

Hard Drive
UltraATA
40 GB 661-2599
60 GB 661-2600
80 GB 661-2601

U-Shaped
Carrier, Ver. 2
076-0778

Hard Drive Carrier
Ver. 2 076-0777

Carrier
Support Plate
922-3871

Enclosure with Chassis 922-4543

Logic Board, CD drive, Zip drive, power supply and hard drives are not part of the enclosure.

Exploded View

1 5

Power Mac G4 (Quicksilver 2002) — Screw Matrix

076-0777

Hard drive carrier, Ver. 2, and (5) screws (same as 922-3874)
('■) Hard drive carrier to hard drive,
H) Hard drive carrier to chassis

922-3874

(*) Hard drive carrier to hard drive,
U) Hard drive carrier to chassis

922-2299

(2) Processor fan to I/O panel

922-4273

(2) Video card fence to video card

922-2739

(4) CD/DVD drive to carrier, (4) Zip drive to carrier, (1) Bracket to power supply

922-3669 ^PH)

( i) Fan to fan bracket

922-4610

(!) Handles and (4) supports

922-3760

(3) Vented rear panel

922-4611

1(3) Right and left side panels

922-3762

(2) Latch to right side panel

922-3873 *

(3) Drive carrier to chassis, (3) logic board to chassis, (4) PCI slot covers

922-4051 f

(3) Processor to logic board

922-4050 (j

(2) Modem to logic board

Cables

Front Panel
Cable (Flat Gray)
922-4561

Firewire Cable (External)
922-3884

Ultra ATA Cable, Dual Drive
922-3862

IDE Cable
922-4614

SCSI Adapter
922-3770

Computer
Power Cord
922-4301

Cable Modem, Phone Ice
922-3963

Ultra 160 SCSI
Cable 922-4274

USB Pro Keyboard
922-4320

USB Pro Mouse (optical)
922-4230

Exploded View

Power Mac G4 (PCI Graphics)

CPU Heatsink Kit
076-0793
Processor Module
350MHz 661-2279
400 MHz 661-2254

Ultra SCSI Card
661-2173

Video Card, MPEG 2,
DVD, Decoder Module
661-2109

Standoffs, Plastic, Dual Locking
922-3738

Jumper Block Kit
350 MHz 076-0760
400 MHz 076-0758

CPU Heatsink Kit
076-0769 Rev. 2

^ Video Card, PCI, 16 MB, Rage 128

Rev. 2 661-2208

DVD-ROM Drive

661-2163
DVD-RAM Drive
661-2162
CD-ROM Drive
661-2191, 32x

Zip & DVD
Drive Carrier
922-3972

Modem Shield,Top
and Bottom Kit
076-0761

Flex Modem Cable
922-3737

Board, FireWire
922-3672
Standoff Hex
922-3687

Logic Board
661-2253

Panel Latch
922-4134

Power Supply
661-2256

Power Supply
Bracket
922-3766

Fan 922-3295

Zip Drive
(optional)
661-2161

Enclosure
w/Chassis
922-3983

Speaker
Housing
922-3982 |Q||

Speaker
922-3712

Front Panel
Board Rev. 2
922-3852

Front Panel
Shield
922-3689

Carrier Support Plate
922-3871

'Covers and Enclosure: See page 2.

Hard Drive
Carrier, Ver. 2
076-0777

Cables and Screw Matrix: See page 3.

Fan Bracket
922-3854 Ver. 2

PCI Slots Shield
922-3704

I / O Panel Kit

Hard Drive IDE
10GB 661-2247
13GB 661-2245
20GB 661-2249
27GB 661-2250

U-Shaped Carrier,
Ver. 2 076-0778

Exploded View

1 7

COVERS

Allen Screws
Side Panels (typical)
922-3761
Left Side
Panel
922-3974

Front and Rear
Top Handle %
,922-3981 — i

Allen Screws Handles
and Supports (typical)
922-3759

Allen Security
Screws (3) Bar Cover
Vented 922-3760 922-3693

I/O Panel
Cover
922-3978

■-ZIP Bezel
922-3966

"Blank Bezel
922-3965
CD/DVD
Door Frame
922-3967

Front Support
922-3971

Right Side
Access Panel
922-3975

Lower Rear Panel
922-3979

Rear Support
^ 922-3970

Enclosure with Chassis 922-3983

Note:

Logic Board, CD drive, Zip drive, power suppl;
and hard drives are not part of the enclosure.

Exploded View

1 8

Power Mac G4 (PCI Graphics) Screw Matrix

076-0777 '
Ver. 2 only f»J

Hard drive carrier, Ver. 2, and (5) screws (same as 922-3874)
(4) Hard drive carrier to hard drive,
( I) Hard drive carrier to chassis

922-3874

(4) Hard drive carrier to hard drive,
( I) Hard drive carrier to chassis

922-1203
(34 total)

1) Modem, (1) Modem plug, (2) Carrier support plate, (1) Power supply bracket,
(4) Latch panel, (12) Logic board, (2) Firewire board, (2) Fan guard, (3) Chassis,
( I) Hard drive carrier retainer, (4) PCI slot covers (same screw can be used
When cards installed)

922-2739

(4) CD/DVD drive to carrier, (4) Zip drive to carrier, (1) Bracket to power supply

922-3013

(1) FireWire board into hex standoff on logic board

922-3669

(4) Fan to fan bracket

922-3687 E

I) Hex standoff (under FireWire board) to logic board

922-3759

(4) Handles and (4) supports

922-3760

(3) Vented rear panel

922-3761 #) j

Right and left side panels

922-3762

(2) Latch to right side panel

922-3873 ffi

(2) CD/DVD/ZIP drive carrier to chassis

Internet Archive Audio

Featured

Top

Images

Featured

Top

Software

Featured

Top

Texts

Featured

Top

Video

Featured

Top

Mobile Apps

Browser Extensions

Archive-It Subscription

Save Page Now

Full text of "Apple PowerMac Manual: powermac g4"

See other formats